Modbus Rtu Relay Module 1 2 4 Channel 7-24V Rs485 Ttl Uart Output 12V Input 485 Communication Ttl Pin Modbus-Rtu Anti-Reverse

One-way/two-way/four-way Modbus relay module equipped with mature and stable 8-bit
MCU and RS485 level communication chip. RS485 communication using standard MODBUS RTU format Communication protocol, can realize 1/2/4 input signal detection, 1/2/4 relay output, can be used for digital detection or power control occasions.


Note: The module has no switch function, and requires careful purchase of switch control relays
1. Onboard mature and stable 8 bit MCU and MAX485 level conversion chip
2. Communication protocol: support standard ModbusRTU protocol
3. Communication interface: support RS485/TTL UART to C]
5. Communication baud rate: 4800/9600/ 19200, default 9600bps, support power-down save
6. Optocoupler input signal range: DC3.3-30V (this input cannot be used for relay control)
7. Output signal: relay switch signal, support manual, flash off, flash off mode, flash off/flash
The delay base of the off-time is 0.1S, and the maximum flash-off/flash-off time can be set to
0 XFFFF*0.1S=65535*0.1s=6553.5s
8. Device address: range 1-255, default 255, support power-down save.
9. Board 1 channel 5V, 10A/250V AC 10A/30V DC relay, which can be continuously pulled in 100,000 times,
With diode bleed protection, short response time
10. Onboard relay switch indicator light
11. Power supply voltage: DC7-24V, with input reverse polarity protection




1. VCC, GND: DC7-24V power input
2. DC3.3-30V optocoupler signal input:
N1 : Channel 1 positive
N2: Channel 2 positive
GND_ IN: Common terminal negative
3. A+, B-: RS485 communication interface, A+, B- are connected to A+, B- of external control terminal respectively
4. Relay 1 switch signal output
NC1; normally closed terminal, short-circuit with COM1 before the relay picks up, and hangs after picking up;
COM1: public terminal;
NO1: Normally open, the relay is suspended before closing, and short-circuited with COM1 after closing.
5. Relay 2 switch signal output
NC2: Normally closed

Variasi:
Size
- 1 Channel
- 4 Channel
- 2 Channel