2-channel 12V relay module relay expansion board development board supports high and low level triggering

Product Introduction

1. The power supply voltage is DC5V (HW-279A) and DC12V (HW-279B), based on the voltage indicated on the relay

2. Optocoupler isolation, driving current 5mA

3. DC+and DC - are power input terminals

4. Relays can control circuits AC220V/10A DC30V/10A

5. Supports high and low level triggering, can switch high and low levels through jumper caps, high level (same power supply voltage), low level (0V)

6. S1 is the high and low level trigger selection for one relay: S2 is the high and low level trigger selection for two relays: when COM and LOW are short circuited, the corresponding relay is triggered at a low level; When COM is short circuited to HIGH, the corresponding relay is triggered at a high level

7. IN1 is the trigger terminal for one relay, and IN is the trigger terminal for two relays

8. Equipped with a power indicator light that lights up when powered on

The 9.2 relay has a status indicator light, which lights up when the relay is engaged and does not light up when it is not engaged

10. Support microcontroller control;

Product Special note

1. The high and low level triggering of this module is effective;

2. The positive and negative poles of the power input terminal cannot be reversed;

3. Relays act as switches, controlling the on/off of load circuits and producing non electrified outputs;

Product Function

Product Size

Product Show

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

We also provide ：