16-Channel RS485 Modbus RTU Relay 16CH

The RS485 16-CH Relay Module is an industrial-grade 16-channel relay controlled via the RS485 bus and employing the Modbus RTU protocol. It offers numerous protective circuits, straightforward handling, and dependable performance for industrial control applications. With a contact rating of ≤10A 250VAC/30VDC, it is ideal for controlling household appliances and devices below 30VDC. The DIN-rail mountable ABS housing allows for easy and secure installation. 

Recommended Accessories:

• Industrial USB to RS485 Converter 
• Industrial USB to RS485/422 Converter FT232RL 
  
• 5V DC 2000mA Plugged power supply AC/DC adapter 5.5mm/2.1mm Plug 

Features: 

• The relay has configurable device addresses between 1 and 255. 
• The flash-ON, flash-OFF function allows the relay to be switched off automatically after a time. 
• The relay has resettable TVS fuses to suppress overvoltages and voltage spikes. 
• The integrated relay driver chip with built-in flyback diode protection allows for stronger and more stable driving capability. 
• The ADI isolation provides signal isolation, high reliability, strong anti-interference and low power consumption. 
• The optocoupler isolation prevents the relay from being disturbed by high-voltage circuits. 
• The circuit is reverse polarity protected and protects against accidentally incorrect connections. 
• The relay has a DIN-rail mountable ABS housing which is easy to install and safe to use. 
• The relay has 3 LEDs as status indicators. 

Documentation: 

• Waveshare Wiki 

Technical Details: 

• Manufacturer: Waveshare 
• Manufacturer SKU: 24921 
• Operating voltage: 5V 
• Power connection: DC 5.5x2.1 power connector, screw terminal 
• Communication interface: RS485 
• Baud rate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 
• Standard communication format: 9600, N, 8, 1 
• Relay channels: 16CH 
• Switching power of the relays: 10A at 250VAC/30VDC 
• Contact form: 1NO 1NC 
• Communication protocol: Standard Modbus RTU protocol 
• RS485 address: 1~255 
• LED indicators: 
• STA: MCU indicator, continuously flashing when MCU is working normally 
• TXD: TX Indicator, lights up when transmitting data 
• RXD: RX Indicator, lights up when receiving data 
• Dimensions: 200 x 100 x 59.1mm 
• Weight: 578g 

Package Includes: 

• 1x 16-Channel RS485 Modbus RTU Relay 16CH