Features: Module size:
73x50x18.5mm with 4 fixing bolt holes, diameter 3.1mm, spacing 44.5x67mm

High and low trigger selection:
The trigger current is 2-4mA, the trigger low level is 0-4V, and the trigger high level is 4.5-12V
1. S1 1-way relay high or low level trigger selection;
2. S2 relay high level or low level trigger selection;
When 2.com and low level short circuit, the relay is a low level trigger, and when communication and high-side short circuit, the relay is a high level trigger.

Input interface: 3. DC+:
Connect the positive terminal of the power supply (voltage requires 1V as a relay)
12. DC-: Connect the negative pole of the power supply
2.IN3-IN1: High or low level control relay can be set

Output interface: 4.NO1-NO1:
The relay normally open interface, pause the relay before pulling, and then connect with COM
4 short-circuit connection. COM2-COM1: Universal interface for relays
4.NC3-NC1: Relay normally closed interface, pull the relay before short circuit with COM, and then hang.

The package includes:
1 pc 1V 12-channel high and low trigger relays (red board)
4pcs Brass Standoff Spacer
4pcs Nuts