Relays
Product information
This is an eight channel 5V DC relay module with active low. It can be controlled by variety of microcontrollers such as Arduino, Raspberry Pi, PIC, DSP, AVR or ARM etc.
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
Specifications
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
Package Includes
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.
Product information
This is a two channel 5V DC relay module with active low. It can be controlled by variety of microcontrollers such as Arduino, Raspberry Pi, PIC, DSP, AVR or ARM etc.
Has the ability to control two separate appliances or pieces of equipment
Two on-board optoisolators enable direct interfacing to microcontrollers.
Two 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
Specifications
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: 2
Item size: 57 x 55 x 20mm
Item weight: 57g
Package includes
1 x 2 Channel Relay Module
Warning
Exercise proper caution when connecting mains driven equipment or appliances to relay module as lethal current will be present.
This GSM gate opener features remote on/off switching by authorized free phone calls, which can be operated from anywhere, no distance limit, very convenient.
Features:
*850/900/1800/1900MHz quad bands, can work in the worldwide GSM networks.
*No call charges. The GSM Relay Switch answers the call from authorized number then carries out the turn ON/OFF action on the first 'ring'.
*Secure - Using caller-ID for identification, unknown callers are ignored.
*Add or remove users by SMS Text command.
*No need to provide a remote control or keys for different users.
*Up to 200 authorized phone numbers can be configured at the specified time.
*The relay action will return a SMS confirmation to the owner or authorized caller number, this function is editabled by user.
*The relay close or open time is programmable.
*Multiple applications. (Gates, bollards, barriers, garage doors, shutters and access doors or machines).
> Remote open/close swing/sliding gates, doors,
shutters, garage doors,locks with a free call!
> Residential: Door,gate,garage access control, electronic
fan,microwave,air-conditioner control.
> Industry: Remote switch equipment, for example: street lights,
solar power, motor, inverter, PLC,pumps, fans, etc.
> Agriculture: Remote control pumps, etc.
> Business: Remote control electronic boxes,bright billboards,LED signs,etc.
How it works?
A) Wire the RTU5024 Gate opener with your door locks or other machines.
B) Insert SIM card to RTU5024 Gate Opener, Power up.
C) Send a few SMS commands to RTU5024 Gate opener, to assign the authorized user list.
D) Make a phone call from the authorized user's phone number, RTU5024 Gate Opener rejects
phone call and door open or close.
For example,If you are using the RTU5024 GSM gate opener to open/close your garage door by
your family members, what you'll need is just 2~5 SMS commands only.
Functions: Swing Gate, Sliding Door, Garage Door Locks
GSM Frequency:850/900/1800/1900MHz
Output Relay:NC/NO dry contact,3A/240VAC
Power Consumption:12V input Max.50Ma/Standby:15mA
SIM Card:Support 3V SIM Card
Antenna: 50 Ω SMA Antenna interface
Temperature range :-20~+60 °C
Humidity range:Relative humidity 90%
2 x cable connectors
It is a learning code wireless remote control switch (receiver), the output way /working way can be changed as you like, it is easy to match the transmitter. It has 4 Relays which can make the equipment turn or reverse, on/off and so on come true. The volume is small and the performance is stable and reliable, high receive sensitivity.
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
Package included:
2 x Transimitter
1 x Receiver
Raspberry Pi board not included
The ModMyPi PiOT (Pi of Things) relay board is smart! Not quite Skynet smart, so you can tell John Connor to stay at home and play with his Raspberry Pi. But it's much smarter than your average relay board! We've created a Raspberry Pi Relay Board that does away with the complicated wiring and fiddly jumper configuration of your standard relay board, and bundles that control into an on-board PIC, making configuration faster, easier and safer. The PiOT relay board can be connected directly on top of the Pi, or via a GPIO ribbon cable (not included), and also features mounting points for the Raspberry Pi Zero. Each is board is fully assembled, and ready to plug and play! We also stock cases for the Raspberry Pi B+/2/3 & Raspberry Pi Zero.
The PiOT relay board allows you to bond a GPIO pin to a relay with the touch of a button. No need to tie pins using resistors, and no need to re-wire the circuit when you want to change which GPIO pin fires which relay. Simply select your GPIO pin using the on-board tactile buttons and two-digit 7-segment display, and switch that pin high or low to fire your designated relay!
The on-board display can be configured to show the Pi's BCM or Pin number system for GPIO/relay bonding, and also demonstrates visual feedback of the relay on/off status for easy monitoring. The display can also be used to test relays before configuring them with your Pi, in addition to providing menu access for setting configuration.
The PiOT relay board also features multiple innovative start-up modes designed to combat "chatter" on the GPIO which can lead to unexpected behavior. Variable delayed start-up allows users to pause activation of the relays for a short period during boot, ensuring that GPIO pins are correctly set prior to use, or the alternative handshake mode utilises a specific pulse train to enable activation and de-activation of the relay board at the user's will. No more accidental switching of relays at boot!
The PiOT relay board uses low current (~100mA) PWM (pulse width modulation) to significantly reduce the current required to hold the relays on when compared to other relay boards. This means that relay boards can be stacked up to 5 high without requiring additional external power.
Warning! Relays can be used to switch large voltages and currents. Please, please, please be careful when undertaking any work with this type of power - it can kill!
The ModMyPi PiOT Relay Board Features:
- 4 x OMRON G5LA-1 Relays for Switching up to 10A @ 250VAC, or 10A @ 24VDC
- 4 x Tactile Buttons for GPIO/Relay Bonding
- Two-Digit 7 Segment Display for Visual Feedback & Setting Control
- Micro-controlled GPIO/Relay Setting & Switching (No Jumpers Required!)
- 40 Point Raspberry Pi GPIO Modelled Input
- 5V & 3.3V Input Compatible
- Low Holding Current via PWM ~ 100mA per Relay Board
- Stackable Relay Board (Up to 5 Without External Power)
- Multiple Start-Up Modes to Negate Boot GPIO Chatter (Delayed/Handshake)
- Pi Zero Mounting Points
Tutorials
Downloads
Video
Review and Introduction by Garage Tech Tips:
Please note: Raspberry Pi not included
Overview
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
Development Resources
Wiki : www.waveshare.com/wiki/RPi_Relay_Board
Package Includes:
- RPi Relay Board x 1
- RPi screws pack (2pcs) x 1
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
Getting Started
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.
The module uses a quality relay with a normally open interface
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)
Specification:
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
Package includes:
1 x 1 Channel H/L level trigger optocoupler relay module
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)
Package includes:
1 x SRD-5VDC-SL-C 5V Power Relay
- Control switches remotely together with 8 Channel relay.
- RJ45 interface, via RJ45 telecommunications connection for network control.
- Support for 8 Channels relay which means you can control 8 different devices at the same time.
- Unique dual TCP connect control, corresponding with above trait, local as TCP server
- Accepts client control, when connect to remote server as TCP client
- Supply core module detailed information. Default IP: 192.168.1.4 port:30000 http://192.168.1.4/30000 (You can change the default IP address)
Package includes:
1 x Ethernet Control Module
1 x 8 CH Relay
Please note: Raspberry Pi is not included
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.
Features
- Supports Raspberry Pi A+/B+/2B/3B/3B+
- 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
Development Resources
We're pleased to annouce the release of ModMyPi's PiOT Relay Board case for the Raspberry Pi B+/2/3. Specially manufacturer in the UK, this case brings together the Raspberry Pi, and PiOT Relay Board into one simple, neat package. Designed to be stylish and functional, the ModMyPi PiOT Relay Board Case enables access to all four relays and Raspberry Pi Ports whilst keeping both boards safe and sound! Each board comes complete with sleeved rubber grommets on the relay side to add some extra protection from any high voltage devices.
The ModMyPi PiOT Relay Board Case Features:
- Laser Cut Acrylic
- Easy Assemble Case
- Designed to fit the Raspberry Pi B+/2/3
- Manufactured in the UK
- GPIO Slot
- Enables Access to all Raspberry Pi & Relay Ports
- Includes 4 x Rubber Grommets for high voltage shielding
- Includes 1 x Grey 40 pin ribbon cable
- Clear Top & Matte Black Sides
- M3 Mounting Points
- Each Relay has LED indication when ON
- SPDT Relays with terminal block outputs.
- Relay Coil voltage: 5 VDC
- Power Requirement: 5 VDC
Feature:
Voltage:5V
Quiescent current: 0 mA
Operating current: 12.5mA
Trigger Voltage: 3.3-5V
Trigger current: 2mA
Package included:
1 x One way Solid State Relay Module
5V solid state relays 240V 2A, output with restive fuse 240V 2A.
2.54cm pin and blue KF301 terminals to control line is more convenient.
Input power supply: 5V DC (160MA)
Input control signal voltage: 0-2.5V low state relay OFF; 3.3-5V high state relay ON
Size: 57 x 55 x 20 mm(L x W x H)
Unlike the mechanical relays - these channels need to connect to ground to trigger
Module interface:
DC +: positive power supply (power supply voltage for relay)
DC -: negative
CH1: relay module 1 signal trigger
CH2: relay module 2 signal trigger
CH3: relay module 3 signal trigger
CH4: relay module 4 signal trigger
Package includes:
1 x 5V 4 Channel Solid State Relay Module
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