Relays
- Has the ability to control eight separate appliances or pieces of equipment
- Eight on-board optoisolators enable direct interfacing to microcontrollers
- Eight red LED status lights on-board show relay activity
- Widely used in PLC control or smart home control
- 4 x M3 mounting holes for easy fixing via standoffs
- 15-20mA drive current needed per channel
- Relay coil maximum operating voltage: 5V
- Relay coil maximum current: 89.3mA
- Relay contact maximum: AC250V at 10A or DC30V at 10A
- No. of relays/channels: 8
- Item size: 134 x 55 x 20mm
- Item weight: 116g
- 1 x 8 Channel Relay Module
Warning
Exercise proper caution when connecting mains driven equipment or appliances to relay module as lethal current will be present.
Specifications
- Each Relay has LED indication when ON
- SPDT Relays with terminal block outputs.
- Relay Coil voltage: 5 VDC
- Power Requirement: 5 VDC
- 10A 250V AC / 10A 30V DC
What's in the box?
1 x Two channel 5V DC Relay Module
Resources
Interfacing with a relay : https://tutorials-raspberrypi.com/raspberry-pi-control-relay-switch-via-gpio/
Features
1. It covers application ranging from simple domestic remote control to autonomous control, like auto door, window, lifting equipment, entrance access, up and down controller, alarm system industrial control and security etc.
2. These remote controls are designed to control a wide variety of electronic devices with a wireless signal.
3. Extremely easy to set up and use.
4. Compatible with 2262 / 2260 / 1527 / 2240 etc chip and several code wireless remote control. So it can meet someone's need of choosing the wireless remote control as they like to work with it .
Instructions
1. Press the learning code, the indicator flash, loosen your finger, press any button of the remote control, the indicator flash 2 times and off, it means you learn it successfully .
2. It can learn more than 12 PCS 2262 or 1527 chip with the different code wireless remote control.
3. remove/clean: press the learning button about 8 seconds , the indicator turn on to off, it means the information that you keep have been removed successfully.
Output working way
1. Self-lock: connect the JP1 with the cutting out cap.
2. Jog: the cutting-out cap is non-occupation, JP1 and JP2 do not connect either.
3. Inter-lock: Connect the Jp2 with the Cutting out cap,
Jog: press one button is ON, loosen your finger on the same button is OFF (need one channel switch and one buttons remote control).
Self -lock: press one button for one time is ON, press the same button again is OFF (need one channel switch and one buttons remote control).
Inter-lock: press one button is ON, press another button is OFF (need one channel switch and 2 buttons remote control).
Receiver
1. Working voltage: DC12V
2. Quiescent condition: Less than 6mA
3. Working temperature: -40°c 80°c
4. Receiver sensitivity: more than -105dBm
5. Working frequency: 433mhz
6. Output voltage: DC and AC is optional
7. Output current: Less than 3A
8. Max load current: 10A
9. Dimensions: 72 x 52 x 26mm
Remote control transmitter
1. Remote Distance: 200M
2. Operating Voltage: DC 12V
3. Frequency: 433mhz
4. Operating Current: 13 mAh
5. Code Type: Fixed code / Learning code
6. Dimensions: 58 x 39 x 14mm
Relay ratings
DC 14V 20A or AC 125V 20A
What's in the box?
2 x Transmitter
1 x Receiver
The RPi Relay Board gives your Pi the ability to control high voltage/high current devices, easily makes normal home appliances become intelligent.
RPi Relay Board Features- Supports Raspberry Pi A /B /2B/3B
- High quality relays, loads up to 250VAC/5A, 30VDC/5A
- Photo coupling isolation, prevent interference from high voltage circuit
- Onboard LEDs for indicating relays status
- Relay control jumper, allows to control the relays by custom pins other than the default pins
- Comes with development resources, including examples in wiringPi, WebioPi, shell, python, and bcm2835
What's on the RPi Relay Board
- Raspberry Pi GPIO interface: for connecting Raspberry Pi
- Relay screw terminal: for connecting target devices
- Relays
- Photocoupler: PC817
- Relay indicator
- LED on: relay NC is opened, NO is closed
- LED off: relay NC is closed, NO is opened
- Power indicator
- Relay control jumper
- short the jumper: control the relays by default I/Os used in the example code
- open the jumper: control the relays by custom I/Os through jumper wires
What's in the box?
1 x RPi screws pack (2pcs)
Resources
The MonkMakes Relay for micro:bit is a solid-state (no moving parts) relay that allows an output of a micro:bit to turn things on and off.
A micro:bit can turn an LED on and off directly, but anything more powerful requires something like a relay or a transistor. Using a transistor to switch something on and off requires a shared ground connection with the micro:bit and a knowledge electronics that you or your students may not be ready for. The MonkMakes Relay for micro:bit is much easier to use, acting like a simple micro:bit controlled switch.
This relay can be used to switch low voltage devices such as light bulbs, a motor, a small heating element or even a string of 12V LED lighting. The voltage needs to be kept under 16V, but the relay will automatically protect itself against too much current.
FEATURES
- Solid-sate relay (up to 2 Amps)
- Active LED indicator
- Resettable ‘polyfuse’ to protect against over-current
What's in the box?
1 x relay for micro:bit
Resources
Getting Started with your micro:bit
Connecting your micro:bit
The Relay requires just two connections to the micro:bit. One to GND (ground) and one to whatever pin is to be used to control the relay’s switching action.
When attaching the alligator clips to the micro:bit, make sure that the clips are perpendicular to the board so that they are not touching any of the neighbouring connectors on the micro:Bit edge connector.
Here’s an example of how you could wire up a MonkMakes Relay for micro:bit to turn an old fashioned light bulb on and off.
HEX File
The quickest way to try out your relay is to DOWNLOAD THIS HEX FILE >and then copy it onto your micro:bit. The program will turn the relay on and off once a second.
JavaScript Blocks Editor
Set the controlling pin to 1 and the relay contacts will close, set it to 0 and the contacts will open again. Its as simple as that. So, to make your relay turn on and off once a second, open the Blocks Editor, add a forever block and then the digital write blocks from the pins category and the pauses from the basic category.
MicroPython
Paste the following code into the Python window and then Download the file and copy it onto your your micro:bit.
from microbit import *
while True:
pin0.write_digital(True)
sleep(500)
pin0.write_digital(False)
sleep(500)
Analog Outputs
The latest MonkMakes Relay for micro:bit can do more than just switch things on and off. It can also be used with micro:bit analog outputs. Look closely at your Relay for micro:bit and is it has the version number v1ev (under the word ‘Board’) then it can be used with the ‘analog write’ block in the blocks editor or the ‘write_analog’ function in MicroPython. If your board has the version number v1e then it is not suitable for use with analog outputs – sorry you were unlucky to get one of the small batch of first boards to be sold.
The output of the Relay for micro:bit is not linear at low PWM and high PWM values as the following chart illustrates.
The y-axis shows the current in mA for a test load resistor supplied from a constant voltage source. The x-axis is the analog write value (0 to 1023). As you can see, there is a dead zone up to a analog output value of about 100, followed by a relatively good linear region right up to about 1000, after which the output effectively becomes ‘on’.
The tests were carried out at the default PWM frequency of 50Hz for the micro:bit. Lower frequency PWM is expected to produce more linear results.
Using SMD optocoupler isolation, driving ability, stable performance
The module can be set high or low with a jumper setting trigger
Fault-tolerant design, even if the control line is broken, the relay will not operate
A power indicator (green) and a relay status indicator (red)
Specifications
- Maximum load: AC 250V/10A, DC 30V/10A
- Trigger current: 5mA
- Working voltage: 5V
- Module size: 50mm x 26mm x 18.5mm (L x W x H)
- Four mounting bolt holes, diameter 3.1mm
Module interface
DC : positive power supply (VCC)
DC-: negative power supply (GND)
IN: can be high or low level to control the relay
Relay outputs
NO: normally open
COM: Common Interface
NC: normally closed
High and low level trigger options
It is low level trigger when jumper connects to LOW pin
It is high level trigger when jumper connects to HIGH pin
What's in the box?
1 x 1 Channel H/L level trigger optocoupler relay module
Resources
Interfacing with a relay
Features
Simple relay magnetic circuit to meet low cost of mass production
Specifications
- Model: SRD-5VDC-SL-C
- Coil voltage: DC 5V
- Coil resistance: 70Ω ~ 80Ω
- Contact resistance: 100Ω Max
- Operation time: 10msec Max
- Release time: 5msec Max
- Ambient temperature: -25°C to 70°C
- Operating humidity: 45 to 85%RH
- Operating current: 43mA ~ 46mA
- Release current: 15mA ~ 18mA
- Pin: 5Pin
- Insulation resistance: ≥100M (Ohm)
- Dielectric strength:
- Between coil & contacts: AC 1500V 50HZ ~ 60HZ/min
- Between contacts: AC 1000V 50HZ ~ 60HZ/min
- Rated load:: 10A 250V AC / 10A 125V AC / 10A 30V DC / 10A 28V DC
- Size: 1.8 x 1.5 x 1.6cm (L x W x H)
What's in the box?
1 x SRD-5VDC-SL-C 5V Power Relay
Overview
The RPi Relay Board (B) is an expansion board with 8-ch relays for Raspberry Pi. It gives your Pi the ability to control high voltage products such as home appliances.
- Supports Raspberry Pi A /B /2B/3B/3B /4B
- High quality relays, loads up to 5A 250V AC or 5A 30V DC
- Photo coupling isolation, prevent interference from high voltage circuit
- Standard rail mount bottom case
- Onboard LEDs for indicating relays status
- Relay control pin selection jumper, allows to control the relays by custom pins other than the default pins
- Reserved control Interface, allows to work with controllers like PLC
- Comes with development resources, including examples in wiringPi, bcm2835, python, python-bottle (webpage control), and crontab (cron job)
Specifications
- Power supply voltage: 5V
- Trigger signal: 3.3V/5V
- Relay channels: 8-ch
- Contact form: SPDT-NO,NC
- Closed current: 6mA (per channel)
- Connector: screw terminal block
- Dimension: 232 × 72 (mm)
- Mounting hole size: 3.0mm
Dimensions
What's in the box?
1 x 8-channel Relay Board
Resources
Product use: Through the potentiometer, adjust to the desired soil moisture level
Specifications
- Electrical parameters: Supply voltage: 12VDC
- Input current: more than 100mA
- Relay Load Max: 10A 250V AC or 10A 30V DC
What's in the box?
1 x Soil moisture control module
1 x Soil sensor
2 x 20cm long DuPont lines
Resources
Module instructions
1 sensors applied to the detection of soil moisture; Module
2. Blue potentiometer is used to adjust soil moisture level, clockwise adjustment and control the humidity will be bigger, counterclockwise smaller;
3. Due to module delay function, adjust the humidity value, wait about 5-8 seconds, see if the the relay state changed, the green LED lamp will also have corresponding change, until adjusted to meet the requirements.
| Size | 62mm(L)x44mm(W)x23mm(H) |
| Input Voltage (Trigger) | DC 3-32V |
| Output Voltage(Line) | AC 24-380V |
| Output Current(Line) | 50 A |
| On Voltage | ≤1.6V |
| On-Off Time | ≤10ms |
| Control Current | 3-35mA |
| Transparent Lid Included | Yes |
What's in the box?
1 X 50A SSR-50DA Solid State Relay With Cover
Resources
Datasheet available at https://cdn.sparkfun.com/datasheets/Components/General/SSR40DA.pdf
Depending on how hard your relay works, you might want to add a heat sink to it.
Q:During continuity testing with my multimeter why does my relay on the AC side not switch on?
A: The below info was found at http://www.crydom.com/en/tech/newsletters/solid statements - bench test an ssr.pdf
A multimeter determines impedance by injecting a small amount of voltage through it's probes into the circuit being tested. It then measures the current flowing through the probes and calculates resistance. Easy enough; Resistance = Voltage / Current! However, as we just discussed above, a solid state relay’s output turns on by “stealing” a bit of voltage from the AC mains in order to supply current to the gate of the SCRs. Simply put, if the AC mains is not connected to the relay then the output cannot turn on. Since the voltage and current produced by a multimeter is not sufficient enough to turn on the SCRs, the output of a solid state relay will remain in the off state; even with the input signal applied. As a result, SSRs will sometimes fail an incoming inspection because the engineer expects to see a significant change in the output impedance when they turn on the relay.The most effective way to bench test a solid state relay is to construct a simple test circuit consisting of a DC power supply or battery (a 9Vdc battery will work fine in most cases ) and a 60W or 100W light bulb.
Adding an aluminum alloy heat sink will increase the lifespan of your SSR relay, it will help dissipate the heat and protect your relay.
Solid State Relays are ideal for automatic process control application, a must component for temperature controller and other machinery control system.
Specifications
- Material: Aluminium alloy.
- Size: Roof:50mm x 60mm.Foot:80mm x 50mm.
- Height: 43mm.
- Weight: 96g
- Compatible with: Designed specially for single phase solid state relay.
- Colour: Silver
What's in the box?
1 x Solid state relay heat sink
Reduce power consumption over extended duration's. A latching relay is a two-position electrically actuated switch that maintains either contact position indefinitely without any power being sent to the coil and is a perfect choice to reduce the power consumption of a system.
Specifications
- Working voltage: DC 5V(This relay is NOT 3.3V compatible)
- Working current: 70MA
- Standby current: 1UA
- Load current: AC 250V / 10A, DC 30V / 10A
- Trigger mode: Low pulse trigger
- Size: 35mm x 16mm x 18.5mm
- Weight: 13.5 g
USE 1:
By default, the relay is released, press the trigger button, the relay pull, press again, the relay release, the third press, the relay pull, and so on.
USE 2:
By default, the relay is released, MCU output low-pulse(0.3-1seconds), the relay pull, low-pulse again, the relay release, the third low-pulse, the relay pull, and so on.
Module interface
1. VCC: positive power supply (VCC)
2. GND: negative power supply (GND)
3. T: Low pulse trigger (Ground the pin to trigger the relay)
Relay outputs
1. NO: normally open relay interface
2. COM: Common Interface Relays
3. NC: normally closed relay interface
Typical applications
- Automotive electronics
- Motor
- LED
- Smart Home
- Emergency lighting
- MCU development board
- Toy car
What's in the box?
1 x Relay module
What's in the box?
1 x Relay
1 x Grove connector
Embedded Protections: Power Supply Isolation & Photocoupler Isolation
Features
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard photocoupler isolation, prevent interference from external high-voltage circuit connected to the relay
- High quality relay, contact rating: 10A 250V AC or ≤10A 30V DC
- ABS protection enclosure with rail-mount support, easy to install, safe to use
- Breakout USB port and BOOT pin, make it easy to debug without disassembling the enclosure
- PWR indicator, RGB LED, and passive buzzer outside the enclosure
- Comes with development resources and manual (Raspberry Pi Pico C/C and MicroPython examples)
Specifications
- OPERATING VOLTAGE: 5V
- RELAY CHANNEL: 8 ch
- COMMUNICATION PROTOCOL: USB
- CONTACT FORM: 1NO 1NC
- COMMUNICATION INTERFACE: Micro USB
What's in the box?
- ABS protection enclosure (top and bottom) x1
- Pico-Relay-B x1
- Screwdriver x1
- Screws pack x1
- Raspberry Pi Pico header
- Relay screw terminal
for connecting external devices - Power supply screw terminal
the multi relays are connected in parallel - Pogo pins
- USB communication port
connected via pogo pins - BOOT key
connected via pogo pins - Reset key
Pico reset - Passive buzzer
controllable sound frequency
- Power indicator
- WS2812
RGB LED, cool! - 8-channel quality relays
contact rating per channel: ≤10A 250V AC or ≤10A 30V DC - Relay operating indicator
- Photocoupler isolation
prevent interference from external high-voltage circuit connected to the relay - Power supply isolation
provides stable isolated voltage, needs no extra power supply for the isolated terminal - Thickened tracks
allows large current devices
Outline dimensions
What's in the box?
1 x Pico 8-Channel relay module
Resources
WIKI: Pico-Relay-B
The MonkMakes SSR is a low voltage solid state relay (no moving parts). This makes it super-easy to control loads of up to 2A at 16V from an Arduino, Raspberry Pi or other 3 or 5V microcontroller or single board computer.
This modern take on the electro-mechanical relay can even be used for low frequency PWM to control the power to its load.
Specifications:
This relay can be used to switch low voltage devices such as light bulbs, a motor, a small heating element or even a string of 12V LED lighting. The voltage needs to be kept under 16V, but the relay will automatically protect itself against too much current.
• Solid-sate relay up to 2 Amp Peak 1A continuous AC/DC
• Active LED indicator
• Resettable ‘polyfuse’ to protect against over-current
• Great for Arduino and Raspberry Pi
• Suitable for low frequency PWM
What's in the box ?
1 x Monkmakes SSR board
Resources:
Datasheet(PDF)
(* ONLY SSR -Solid State Relay - Included - all other products are for reference use only*)
Features
- RS485 half-duplex communication: using SP3485, UART control, auto RX/TX switch
- CAN half-duplex communication: using MCP2515 SN65HVD230 solution, SPI control
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard photocoupler isolation, prevent interference from external high-voltage circuit connected to the relay
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
- Onboard resettable fuses and protection diodes, ensuring current/voltage stable output, preventing over current/voltage, better shock-resistance performance
- High quality relay, contact rating: ≤10A 250V AC or ≤10A 30V DC
- ABS protection enclosure with rail-mount support, easy to install, safe to use
- Comes with development resources and manual (wiringPi and python examples)
Specifications
| OPERATING VOLTAGE | 7V~36V (industrial input voltage compatible) | RELAY CHANNEL | 6 ch |
|---|---|---|---|
| COMMUNICATION PROTOCOL | RS485, CAN | CONTACT FORM | 1NO 1NC |
What's in the box ?
1 x ABS protection enclosure (top and bottom)
1 x RPi Zero Relay
1 x Screwdriver
1 x 12V 1A power adapter
1 x Screws pack
Resources
WIKI: RPi_Zero_Relay
- Omron 5V solid state relay 240V 2A, the output with a resistive fuse 240V 2A.
- Input power: 5V DC (160MA)
- input control signal voltage:
- Low level module: (0-2.5V state low level relay OFF)
- (3.3-5V state high level relay ON)
What's in the box?
1 x solid state relay
size: (L * W * H mm)
1 channel: 25 * 34 * 25
2 channel: 55 * 33 * 25
4 channel: 57 * 55 * 25
8 channel: 106 * 56 * 25
Input section:
DC +: Connect the power supply positive (according to the relay voltage)
DC-: Connect the power supply negative
CH1: 1 relay module signal trigger terminal (low level trigger active)
CH2: 2 relay module signal trigger terminal (low level trigger active)
CH3: 2 relay module signal trigger terminal (low level trigger active)
CH4: 2 relay module signal trigger terminal (low level trigger active)
High and low meaning:
High-level trigger refers to the signal trigger side (IN) and the negative power supply has a positive voltage between the positive and the power supply is usually connected to the trigger side of a trigger, when the trigger side voltage or trigger to reach the trigger Voltage, the relay is pull.
Low-level trigger refers to the voltage between the signal trigger terminal and the negative terminal of the power supply is OV, or the voltage of the trigger terminal is lower than the voltage of the positive terminal of the power supply. When the voltage is low enough to trigger, the relay is pulled in, The negative side of the power supply is connected to the trigger side of a trigger, so that the relay is pull.
Electrical parameters:
Voltage Version Quiescent Current Operating Current Trigger Voltage Trigger Current
1 channel 5V 0mA 12.5mA 0-2.5V 2mA
2 channel 5V 0mA 22.5mA 0-2.5V 2mA
4 channel 5V 0mA 48mA 0-2.5V 2mA
8 channel 5V 0mA 102mA 0-2.5V 2mA
Instructions
1. Module power supply: the power must be DC, the voltage and the relay voltage to match
2. Wiring method:
When the trigger side of the signal trigger level, the relay will be connected, the device has electricity and work
Notes
1. Module power supply: power must be DC, 5V power supply
2. Module control terminal voltage: This module can only be used to control AC current, can not control DC current.
Input power: 5V DC (160MA)
input control signal voltage:
Low level module: (0-2.5V state low level relay OFF)
(3.3-5V state high level relay ON)
size: (L * W * H mm)
1 channel: 25 * 34 * 25
2 channel: 55 * 33 * 25
4 channel: 57 * 55 * 25
8 channel: 106 * 56 * 25
Input section
DC +: Connect the power supply positive (according to the relay voltage)
DC-: Connect the power supply negative
CH1: 1 relay module signal trigger terminal (low level trigger active)
CH2: 2 relay module signal trigger terminal (low level trigger active)
CH3: 2 relay module signal trigger terminal (low level trigger active)
CH4: 2 relay module signal trigger terminal (low level trigger active)
High and low meaning
High-level trigger refers to the signal trigger side (IN) and the negative power supply has a positive voltage between the positive and the power supply is usually connected to the trigger side of a trigger, when the trigger side voltage or trigger to reach the trigger Voltage, the relay is pull.
Low-level trigger refers to the voltage between the signal trigger terminal and the negative terminal of the power supply is OV, or the voltage of the trigger terminal is lower than the voltage of the positive terminal of the power supply. When the voltage is low enough to trigger, the relay is pulled in, The negative side of the power supply is connected to the trigger side of a trigger, so that the relay is pull.
Electrical parameters
Voltage Version Quiescent Current Operating Current Trigger Voltage Trigger Current
1 channel 5V 0mA 12.5mA 0-2.5V 2mA
2 channel 5V 0mA 22.5mA 0-2.5V 2mA
4 channel 5V 0mA 48mA 0-2.5V 2mA
8 channel 5V 0mA 102mA 0-2.5V 2mA
What's in the box?
1 x solid state relay
Resources
Instructions
1. Module power supply: the power must be DC, the voltage and the relay voltage to match
2. Wiring method:
When the trigger side of the signal trigger level, the relay will be connected, the device has electricity and work
Notes
1. Module power supply: power must be DC, 5V power supply
2. Module control terminal voltage: This module can only be used to control AC current, can not control DC current.
Relays are always good to have especially for electronics projects. The relay itself offers two main benefits:
- Isolation of low voltage system against high voltage system, example 5VDC and 240VAC
- Allow electronics with low voltage to control high power load, for example from Arduino to AC light bulb.
This is not an ordinary Relay breakout. It comes with 1 (single) channel 3.3V activation relay, ready to control 250VAC at 10A. Extra isolation with optocoupler at the front of control and the activation logic for the relay is configurable via a mini jumper. In simple words, the relay can be configured as 3.3V(High) activation or 0V(Low) activation. This is the universal Relay breakout board and we like it.
It comes with three (3) screw terminals for the relay output:
NO (Normally Opened),
NC (Normally Closed),
COM (Common),
and screw terminals for the control signal from a microcontroller such as Arduino or micro:bit. The control signal is optoisolated, protected. It even comes with power and activation indicator LEDs for the relay. Easy to use and suitable for beginners, and of course students too.
Input power and signal:
- DC+ = +3.3VDC
- DC- = GND (Ground or 0V)
- In1 = Control signal, 3.3V as logic High; 0V as logic Low
If you need to control AC or high current, high voltage load, this will be the perfect board.
Note: We notice the DC+ and DC- need to be 3.3V and the In1 (control signal) needs to be 3.3V or Ground to make it works properly.
- 3.3V One (single) channel relay module
- Configurable Activation Logic, High or Low, via mini jumper
- Maximum Current Rating: 10A
- Maximum Voltage Rating: AC 250V
- Can control various appliances with large current and high voltage
- Can be controlled directly by 3.3V microcontrollers such as Arduino, micro:bit.
- Build-in an Opto-Isolator for extra isolation and protection to the controller.
- A power indicator LED, and another relay activation indicator LED
Warning
Exercise proper caution when connecting mains driven equipment or appliances to relay module as lethal current will be present.
Relays are always good to have especially for electronics projects. The relay itself offers two main benefits:
- Isolation of low voltage system against high voltage system, example 5VDC and 240VAC
- Allow electronics with low voltage to control high power load, for example from Arduino to AC light bulb.
This is not an ordinary Relay breakout. It comes with 2 channels 3.3V activation relays, ready to control 250VAC at 10A. Extra isolation with optocoupler at the front of control and the activation logic for the relay is configurable via a mini jumper. In simple words, the relay can be configured as 3.3V(High) activation or 0V(Low) activation. This is the universal Relay breakout board and we like it.
It comes with three (3) screw terminals for each relay output:
NO (Normally Opened),
NC (Normally Closed),
COM (Common),
and screw terminals for the control signal from a microcontroller such as Arduino or micro:bit. The control signal is optoisolated, protected. It even comes with power and activation indicator LEDs for the relay. Easy to use and suitable for beginners, and of course students too.
Input power and signal:
- DC+ = +3.3VDC
- DC- = GND (Ground or 0V)
- In1 = Control signal, 3.3V as logic High; 0V as logic Low
- In2 = Control signal, 3.3V as logic High; 0V as logic Low
If you need to control AC or high current, high voltage load, this will be the perfect board.
Note: We notice the DC+ and DC- need to be 3.3V and the In1 (control signal) needs to be 3.3V or Ground to make it works properly.
- 3.3V One (single) channel relay module
- Configurable Activation Logic, High or Low, via mini jumper
- Maximum Current Rating: 10A
- Maximum Voltage Rating: AC 250V
- Can control various appliances with large current and high voltage
- Can be controlled directly by 3.3V microcontrollers such as Arduino, micro:bit.
- Build-in an Opto-Isolator for extra isolation and protection to the controller.
- A power indicator LED, and another relay activation indicator LED
Warning
Exercise proper caution when connecting mains driven equipment or appliances to relay module as lethal current will be present.