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Relay module 32 channels with optoisolation - 10A/250VAC/30VDC contacts - 7V-36V coil - Modbus RS485 - Waveshare 25140
The module is designed to control up to 32 relays with a voltage of 230 V AC or 30 V DC and a maximum current of 10 A via the RS485 interface. It uses the Modbus RTU protocol and is equipped with numerous protective circuits that ensure reliability and safety. The relay coil is powered by a voltage of 7 V to 36 V. The device is perfect for industrial applications where fast and stable communication connections are required.
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Product description: Relay module 32 channels with opto-isolation - contacts 10 A / 250 V AC / 30 V DC - coil 7 V - 36 V - Modbus RS485 - Waveshare 25140
The Waveshare brand module is an advanced device controlled via RS485 interface, using the standard Modbus RTU protocol. Equipped with multi-level protection systems, such as power isolation, magnetic isolation, overvoltage and surge protection, which guarantees long-term operation in harsh industrial conditions. Modbus RTU 32-Ch Relay Module is able to support up to 32 relays with a maximum power of up to 10 A at 250 V AC / 30 V DC , which makes it suitable for controlling various devices, including household appliances, lighting or motors. Thanks to the housing mounted on a DIN rail, the module is easy to install and is ideal for extensive industrial automation systems.
Relay module 32 channels with opto-isolation - contacts 10 A / 250 V AC / 30 V DC - coil 7 V - 36 V - Modbus RS485 - Waveshare 25140.
Botland is an official distributor of Waveshare devices. Their versatility and compatibility, particularly in display and power technology, have won over customers all over the world. Our team guarantees that all Waveshare products presented here are original.
Relay module controlled via RS485 bus, using the Modbus RTU protocol.
Special Features of Modbus RTU 32-Ch Relay Module
- 32 Relay Channels : Supports up to 32 relays with a load of up to 10 A
- RS485 interface : uses the Modbus RTU protocol for communication, allowing multiple devices to be connected on a single bus
- Multi-level protection : protection against overvoltages, electrostatic discharge overvoltages, overcurrent protection
- Opto-isolation of relays : each relay has its own optical isolation, which protects it from the influence of high external voltages
- Easy to install : DIN rail housing allows easy installation in control cabinets
- Power Supply : Supports wide range of supply voltage from 7V to 36V
- Device addressability : the ability to configure the device address from 1 to 255, which facilitates the integration of multiple modules in complex industrial automation systems
- "Flash-on, flash-off" function : allows relays to be switched on for a short time and then automatically switched off via command
Connecting the module to 220 V AC devices
- Connect power to the relay module (7 V to 36 V DC).
- Use terminals L (live) and N (neutral) to connect to a 220V AC power supply.
- Connect the device's power cable to the COM terminal and the NO terminal on the module to enable control of the device.
Connecting the module to 30 V DC devices
- Connect power to the relay module (7 V to 36 V DC).
- Connect the positive terminal of the device's power supply to the NO terminal and the negative terminal to the COM terminal.
- Make sure the power supply for the module and device meets the voltage requirements.
When connecting multiple modules in the system, ensure correct configuration of device addresses (1-255) and the possible use of RS485 repeaters to maintain stable communication over longer distances.
Module connection diagram.
Optocoupling isolation prevents high-voltage circuits from interfering with the relay.
Module Applications
- Industrial automation systems
- Controlling household appliances
- Lighting control
- Electric motor management
- Advanced monitoring and building automation systems
Relay Module Specifications
- Coil supply voltage: 7 V to 36 V
- Communication interface: RS485
- Baud rate: 4800, 9600, 19200, 3840, 57600, 128000, 256000
- Default communication format: 9600, N, 8, 1
- Number of relays: 32
- Connectors: 1NO 1NC
- Communication protocol: standard Modbus RTU protocol
- RS485 Address: 1 to 255
- Protections: Power Isolation, Optical Isolation, Magnetic Isolation, Resettable Fuse and TVS, Surge Protection, Protection Diodes
- LED indicator:
- STA: MCU indicator, flashes when MCU is working normally
- TXD: TX indicator, flashes when sending data
- RXD: RX indicator, flashes when receiving data
- Mounting: on a 35 mm DIN rail
- Dimensions: 300 x 110 x 60 mm
The design is easy to mount on a 35 mm DIN rail.
Useful links
| Name | Value |
|---|---|
| Channels | 32 |
| Interface | USB / RS485 |
| Width | 32.5 cm |
| Height | 14 cm |
| Depth | 8 cm |
| Weight | 0.932 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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