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Onboard mature and stable 8bit MCU and MAX485 level conversion chip; :

Communication protocol:

support standard Modbus RTU protocol;

Communication interface:

support RS485/TTL UART interface;

Communication baud rate:

4800/9600/19200, the default is 9600bps, supports power-off save;

Optocoupler input signal range:

DC3.3-30V (this input cannot be used for relay control);

Output signal:

relay switch signal, support manual, flash off, flash off mode, flash off/flash off delay base is 0.1S, the maximum flash off/flash off time can be set to 0xFFFF*0.1S=6553.5S;

Device address:

range 1-255, default 255, support power-off save;

Baud rate, input signal, relay status, device address can be read by software/command; :

Onboard 4 5V, 10A/250V AC 10A/30V DC relays, which can be activated continuously for 100,000 times, have diode effusion protection, and have short response time; :

On-board relay switch indicator; :

Power supply voltage:

DC 7-24V, support DC socket/5.08mm terminal power supply, with input anti-reverse protection;

1. DC-005 socket:

DC7-24V power input socket;

2. VCC, GND:

DC7-24V 5.08mm power input terminal;

3. DC3.3-30V optocoupler signal input:

IN1:

Channel 1 positive

IN2:

Channel 2 positive

IN3:

Channel 3 positive

IN4:

Channel 4 positive

GND_IN:

Common terminal negative

4. A+, :