1.Input power supply:5V DC (160MA).

2.Specification (1 / 2 At Optional):1. State of 0-1.5V low level relay ON;State of 2.5-5V high level relay OFF;State of 0-2.5V low level relay ON;State of 3-5V high level relay OFF.

3.Interface:DC+:connect to positive(according to the relay voltage supply); DC-:connect to negative,CH relay module signal triggering side (high level trigger active).

4.Trigger voltage:low level 0-2.5V, high default 3.5-5V (in the case of voltage 12V trigger, you need a series resistance of a 5.1-6.8K before the trigger; 24V voltage trigger, you need a 15-22K resistors in series before the trigger, otherwise it will burn the chip).

5.Voltage:low voltage.

6.Static current:0mA .

7.Working current:12.5mA.

8.Trigger current:2mA.

9.Weight:13g.

10.Pack Size:25*34*25mm.