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Description
7-24V Power Supply Modbus RTU Relais 2 Channel RS232 Serial Relay Module RS232/TTL UART 2 Input Modbus Smart Relay
Product Description
The dual-channel Modbus relay module is equipped with a mature and stable 8-bit MCU and RS232 level communication chip. Using the standard MODBUS RTU format RS232 communication protocol, it can realize 2-channel input signal detection and 2-channel relay output, which can be used for digital detection or power control occasions
Feature
1. Onboard mature and stable 8bit MCU and MAX3232 level conversion chip; 2. Communication protocol: support standard Modbus RTU protocol; 3. Communication interface: support RS232/TTL UART interface; 4. Communication baud rate: 4800/9600/19200, default 9600bps, support power-down save; 5. Optocoupler input signal range: DC3.3—24V (this input cannot be used for relay control); 6. Output signal: relay switch signal, support manual, flash-off, flash-off mode, the delay base of flash-off/flash-off is 0.1S, and the maximum flash-off/flash-off time can be set to 0xFFFF*0.1S=6553.5S; 7. Device address: range 1—255, default 255, support power-down save; 8. The baud rate, input signal, relay status and device address can be read by software/command; 9. On-board 2-way 5V, 10A/250VAC 10A/30V DC relay, which can be pulled in 100,000 times continuously, with diode bleed protection and short response time; 10. On-board relay switch indicator light; 11. Power supply voltage: DC7—24V