WaveShare
Modbus RTU Protocol, Multi Isolation Protection Circuits, Safe & Stable & Reliable
Features At A Glance
This is an industrial 8-ch relay module controlled via RS485 bus, with 8-ch digital input, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, magnetical isolation, and TVS diode, etc. It also comes with an ABS enclosure. The Modbus RTU Relay (D) is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirement.
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus
- Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
- Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability
- Supports passive and active digital input, with bi-directional optocoupler isolation, built in debouncing algorithm. The relay supports digital input linkage control or toggle control
- Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
- High quality relay, contact rating: ≤10A 250VAC/30VDC
- Rail-mounted ABS plastic enclosure, easy to install, safe to use
- Multiple LEDs for indicating the MCU status and signal transceiving status
| POWER SUPPLY | 7~36V |
|---|---|
| COMMUNICATION INTERFACE | RS485 |
| BAUDRATE | 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 |
| DEFAULT COMMUNICATION FORMAT | 9600, N, 8, 1 |
| RELAY CHANNELS | 8 |
| CONTACT FORM | 1NO 1NC |
| CONTACT RATING | ≤10A 250VAC/30VDC |
| DIGITAL INPUT | 8DI, 5~36V, passive / active input (NPN or PNP), built-in bi-directional optocoupler isolation |
| COMMUNICATION PROTOCOL | Standard Modbus RTU protocol |
| RS485 ADDRESS | 1~255 |
| LED INDICATORS | STA: MCU indicator, keeps flashing when the MCU normally working TXD: TX indicator, lights up when sending data RXD: RX indicator, lights up when receiving data |
Primary Function
Supports Reading Digital Input By Sending Modbus RTU Protocol Commands Via RS485 For Relay Output Control
Hardware Analysis
Multiple Protections For Safer And More Reliable Use
Digital Input
Supports Passive (Dry Contact) And Active (Wet Contact) Digital Input, With Bi-Directional Optocoupler Isolation
Interfaces & Indicators
With Multiple LED Indicators, Easy To Monitor The Operating Status
Supports Multiple Relay Control Modes, Each Channel Supports Independent
Control Mode Setting
RS485 Communication
Configurable Device Address (1~255), Multi Devices Can Be Cascaded On RS485 Bus
In Case Of Many Devices Are Cascaded, Or Communication Distance Is Quite Long, It Is Necessary To Use RS485 Repeaters
for reference only, the USB TO RS232/485/TTL converter is Not included
Relay Connection
Contact Rating Of The Onboard Relay Up To 10A 250VAC/30VDC
Directly Controlling 220VAC Home Appliances, Or Devices Below 30VDC
Enclosure Design
Rail-Mounted ABS Plastic Enclosure, Easy To Install, Safe To Use
Outline Dimensions
What's in the box?
1 x Modbus RTU Relay (D)
1 x Screwdriver
Resources
WIKI: www.waveshare.com/wiki/Modbus_RTU_Relay_(D)
Introducing the SK M2 NVME 2242 128GB Solid State Drive, a compact powerhouse engineered to elevate your storage experience. Boasting high-quality 3D TLC flash memory, this SSD offers not just ample space but also exceptional speed and reliability. With lightning-fast reading and writing capabilities, it's primed to handle the demands of modern computing tasks with ease.
Features
- PCIe Gen3 x4 interface
- Supports static and dynamic wear leveling and bad block management
- Supports queue depth of 64K
- Supports 2KB LDPC ECC engine and RAID
- Supports SMART and TRIM commands
Specifications
- INTERFACE: M.2 NVMe PCIe 3.0
- DIMENSIONS: 22×42×3.5 mm
- NAND FLASH MEMORY: 3D TLC Flash
- OPERATING TEMPERATURE: 0°C - 70°C
- DEVICE SUPPORT: Laptops / PCs / All-in-one hosts, etc.
- CERTIFICATE: CE, RoHS, FCC, REACH
- SYSTEM SUPPORT: Windows, Raspberry Pi OS, CentOS, Ubuntu, Linux
What's in the box?
1 x NVMe 2242 Solid State Drive
You might also need a NVMe board.
Rail-mount RS485 serial server
RS485 TO ETH (B)
Common Ethernet port
RS485 TO POE ETH (B)
PoE Ethernet port + Electrical isolation
These two versions are the same in software functions, while RS485 TO POE ETH (B) is the hardware upgrade version, support PoE Ethernet port power supply, with power and signal isolation protection, which is safer for industrial applications.
This is an RS485 device data acquisitor / IoT gateway designed for the industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, etc. The module features RS485 and Ethernet port(POE function is optional), uses screw terminals for power input. Rail-mount case design, small in size, easy to install. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring...
| PRODUCT | RS485 TO ETH (B) | RS485 TO POE ETH (B) |
|---|---|---|
| Product Type | Serial server, Modbus Gateway, MQTT Gateway | |
| Basic Function | Bi-directional transparent data transmission between RS485 and Ethernet | |
| Communication interface | RS485 port x 1, Ethernet port x 1 | |
| Power supply | 9 ~ 24V DC screw terminal | 6 ~ 36V DC screw terminal, or PoE port |
| Isolation Protection | N/C | Power isolation, Signal isolation |
| COMMUNICATION | ||
| Ethernet | common network port | PoE network port, support IEEE 802.3af standard |
| 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection | ||
| Serial port | RS485 | Isolated RS485 |
| SERIAL SPECIFICATION | ||
| Baudrate | 300 ~ 115200 bps | |
| Parity bit | none, odd, even, mark, space | |
| Data bit | 5 ~ 9 bits | |
| Flow control | N/A | |
| SOFTWARE | ||
| Protocol | ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS | |
| Configuration | host, web browser, device management functions library | |
| Communication method | TCP/IP direct communication, VCOM | |
| Operating mode | TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast | |
| ENVIRONMENT REQUIREMENT | ||
| Operating temperature | -40℃ ~ 85℃ | |
| Storage temperature | -40℃ ~ 100℃ | |
| Humidity range | 5% ~ 95% relative humidity | |
| Dimensions | L × W × H: 87 × 36 × 59 mm | |
Bi-Directional Transparent Data Transmission Between RS485 And Ethernet
Easy To Combine Multi Rail-Mounted Serial Server Together, More Freely
Suitable For Modbus Gridding Upgrade, Can Be Used With 3D Configuration Software
Supports TCP Server / TCP Client / UDP Mode / UDP Multicast
More Flexible Conversion Between Different Protocols
When used as MQTT gateway, the devices can upload serial data to MQTT server by MQTT protocol through transparent transmission, supported servers including Baidu Cloud MQTT, Alibaba Cloud MQTT, China Mobile OneNet, etc. The acquired Modbus RTU or non-standard serial data can be parsed into JSON format and packaged into MQTTdata packet for uploading.
When used as JSON data acquisition gateway, the devices can be connected to data acquisition instruments through RS485 connection, then acquire data automatically, convert the data into JSON format, and finally post it to server. The acquired data supports Modbus RTU 645 instrument 97 version, 645 instrument 07 version, as well as sorts of non-standard RS485 protocols. The uploaded data format can be configured via host, and the JSON upload protocol can be MQTT protocol, HTTP POST protocol, HTTP GET protocol, and so on.
Different Network Devices Will Be Identified And Responsed Respectively,
No More Crosstalk Issue While Communicating With Multi Network Devices
Easy For Cloud Communication And Device Identification
Getting Network Time Info For Serial Output Or Data Upload
Supports Web Browser Configuration, Obtaining Dynamic IP Via DHCP,
DNS Protocol Connected Domain Server Address
Compact Size, Cooling Fan All-in-One Design, Suitable for Raspberry Pi 5
Adapter For NVMe Protocol M.2 Solid State Drive, High-Speed Reading/Writing, Improves Working Efficiency
| FAN Input voltage | 5V DC (supplied via four-pin fan header on Raspberry Pi 5) |
|---|---|
| M.2 interface | Supports NVMe Solid State Drives (PCIe Gen2/3) |
| Solid State Drive size support | 2242, 2230 |
| Fan speed control | Pulse width modulation control with tachometer |
| Maximum airflow | 1.39 CFM |
| Fan speed | 8000±10%RPM |
| Material | Anodised aluminium |
- for reference only, please refer to the Package Content for detailed part list
Note: Only supports the NVMe Protocol Solid State Drives.
Connecting with NVME Solid State Drive
Connecting with Hailo-8 AI Accelerator Module
* for reference only, please refer to the Package Content for detailed part list
Matching the size and mounting holes of the Raspberry Pi 5,
combines A Temperature-Controlled Blower Fan with an aluminium heatsink
to accelerate heat dissipation.
- for reference only, please refer to the Package Content for detailed part list
Based on 16PIN PCIe Interface of Raspberry Pi 5
- for reference only, please refer to the Package Content for detailed part list
Compatible With 2242 / 2230 Size M.2 Solid State Drives
Supports Gen2 And Gen3 Modes, Supports Booting PI5 From Solid State Drive
Easy to monitor the Working Status
With Active-Cooler-A
With Active-Cooler-B
With PCIe TO M.2 Board (E)
- for reference only, please refer to the Package Content for detailed part list
1 x PCIe TO M.2 Board (E)
1 x MX1.25 2PIN cable
1 x Thermal pad (3PCS)
1 x Screws pack
Resources
Designed For Raspberry Pi 5, Supports IEEE 802.3af/at Network Standard
Adapter For NVMe Protocol M.2 Solid State Drive, High-speed Reading/Writing
| PoE power input | 37V ~ 57V DC in |
|---|---|
| Power output | GPIO header: 5V 4.5A (MAX) 2P header: 12V 2A (MAX) |
| Dimensions | 56.5 × 70.0mm |
| Network standard | IEEE 802.3af/at PoE |
for reference only, the Raspberry Pi 5 is not included.
Note: Only supports the NVMe Protocol Solid State Drives.
Based on 16PIN PCIe Interface of Raspberry Pi 5.
Standard Raspberry Pi 40PIN GPIO stackable header, allows connecting other HATs
for reference only, please refer to the Package Content for detailed part list
Easy to monitor the Working Status
Compatible With 2230/2242 Size M.2 Solid State Drive
Supports Gen2 and Gen3 Modes, Supports Booting PI5 From Solid State Drive
Providing both network connection and power supply for your Raspberry Pi in one cable
5V header provides up to 4.5A output (MAX 25W for 12V+5V total output power)
be able to power extra devices while providing stable power to Raspberry Pi
Accelerate Cooling Effect, More Stable Performance
Attach the thermal tapes first, then install the metal heatsink and fix the HAT
for reference only, please refer to the Package Content for detailed part list
1 x PoE M.2 HAT+
1 x Metal heatsink
1 x 16P-Cable-40mm
1 x Thermal tape (3PCS)
1 x Screws pack
You might also need our case made specifically to house this kind of board
Rail-mount and Wall-mount Support, Larger Internal Space, Supports installing various HATs and Expansion Boards.
for reference only, the Raspberry Pi 5 is NOT included.
Metal case with simple appearance design, Compatible with Most HATs/Modules and Accessories of Raspberry Pi 5
Each Cut-Out Is Completely Aligned With The Interfaces of Raspberry Pi 5, with removable reserved holes. It also has reserved antenna holes and RF outlets to reduce signal attenuation of WiFi and Bluetooth communication
Note: The reserved holes are designed with removable panels. Users can cut them open with needle-nose pliers according to the interface requirements of internal HAT or expansion board.
More flexible for industrial installation and use
Comes with rail-mount bracket, supports 35mm standard guide rail
Wall-mount installation
Prepare the screws as shown above. The following is an assembly demonstration using Raspberry Pi 5 and the official cooling fan.
1. Install the cooling fan to the Raspberry Pi 5 with 4x ④ copper standoff and 4x ⑤ nut (or ⑥ copper standoff).
2. Install the ① button cap to the hole on the bottom case, align the interface holes to install the Raspberry Pi 5, and fix the Pi via 4x ⑦ screw.
3. Align the top cover to the USB/ETH ports of Pi 5 and snap it into the bottom case, and assemble them together with 4x ⑦ screw.
4. Then install wall-mount or guide rail bracket according to your needs.
Wall mounting: use 4x ⑦ screw to install the wall-mount bracket to the position shown in the picture.
Rail mounting: use 2x ② screw to install the rail-mount bracket to the position shown in the picture.
What's in the box?
1 x Industrial Grade Metal Case (D) for Raspberry Pi 5, Larger Internal Space, Supports Installing Official Cooling Fan And Various HATs, Wall-mount and Rail-mount Support
long range | short blind zone | stable/accurate/sensitive | indoor/outdoor
This is a TOF-based (time of flight) laser ranging sensor with embedded MCU and ranging algorithm, which is capable of offering up to 25m / 50m measuring range, and ±3cm accuracy. It supports UART or I2C communication bus, features longer measuring distance and higher light interference tolerance capability due to its ultra narrow FOV, suitable for either indoor or outdoor condition. And its ambient light tolerance is up to 100K LUX.
This sensor can be widely used in applications like common distance measuring, robot obstacle avoidance / route planning, as well as drone altitude setting / ceiling detection, and more...
TOF Laser Range Sensor (C)
25m measuring range
| Model | TOF Laser Range Sensor (C) | TOF Laser Range Sensor (D) |
|---|---|---|
| Typical measuring range | 0.05 ~ 25.0m | 0.05m ~ 50.0m |
| Typical measuring accuracy | 0.05 ~ 25m ±3cm | 0.05m ~ 50m ±3cm |
| Wavelength | 905nm | |
| Field of view (FOV) | 1° ~ 2° | |
| Communication interface | Default: UART (3.3V TTL signal level) | |
| I2C (cascading support, the slave address is 0x08+module ID) | ||
| complementary I/O level output (distance parameter is not available in this mode) | ||
| Baudrate | UART: 4.8Kbps ~ 3000Kbps (921.6Kbps by default) | |
| I2C: up to 400Kbps | ||
| Power supply | 4.3 ~ 5.2V | |
| Power consumption | 250mW (UART active output, 5.0V power supply, 50mA current) | |
| Weight | 7.7g | |
| Operating temperature | -10°C ~ 60°C | |
| Dimensions | 22.7mm × 28mm × 13.6mm (L × W × H) | |
long range low cost ranging module
high stability, high accuracy, high sensitivity ranging
UART mode: supports active query output
I2C mode: up to 8x cascades
I/O mode: unable to output distance parameter
Hydraulic Stacking Detection
Connecting with Raspberry Pi (via I2C)
Connecting with Raspberry Pi (via UART)
Connecting with Raspberry Pi (via I/O pins)
Designed for Raspberry Pi 5
Based on 16PIN PCIe Interface of Raspberry Pi 5
* for reference only, please refer to the Package Content for detailed part list
Flexible Combination for Easy Stacking of Multiple PCIe HATs
Expands Multiple PCIe HATs
* for reference only, please refer to the Package Content for detailed part list
Supports PCIe Gen2 (PCIe 2.0) Only
1 x PCIe TO 4-Ch PCIe HAT
1 x 2*20 Pin header
1 x Heatsink
1 x Standoff pack
5 x 16P-Cable-40mm
5 x 16P-Cable-70mm