Special feature:

1. the module uses high -quality relays, usually open interfaces. Maximum load: AC 250 V/10 A, DC 30 V/10 A;

2. with SMD optocopper isolation, driving ability, stable performance; Trigger current 5MA;

3. the module voltage is 5 V;

4. the module can be set to high or low by jumper;

5. fault -tolerant design, even if the control line is interrupted, the relay does not work;

6. the operating display (green), relay status display (red);

7. interface design human, all interfaces can be connected directly via connection cables, very practical;

8. module size: 50 mm * 26 mm * 18.5 mm;

9. has four fastening screw holes, hole 3.1 mm, 44.5 mm * 20.5 mm distance.

Module interfaces:

1. DC +: Positive power supply (voltage required by the relay)
2. DC-: Negative power connection
3. IN: can be a tax relay for high or low level

Relay outputs:

1. NO: Usually open relay interface, the relay is short -circuited after pulling with com;
2. COM: common interface relay;
3. NC: Usually closed relay interface relay with COM short-circuited, after the pull leader.

High and low level trigger selection terminal:
1. When the jumper is short circuited to LOW, it is triggered at a low level;
When the jumper is short circuited to high, it triggers a high level.

Package include:
3x 1 channel 5V relay module with Optocoupler supports High and Low Trigger