Description:
Maximum load: AC 250V/10A, DC30V/10A
SMD optocoupler isolation, strong driving ability, stable performance; trigger current 5mA
The module voltage 5V
Each channel module can be set high or low triggered by jumper
Fault-tolerant design, even if the control line is broken, the relay will not operate
Power indicator (green), 4 relay state indicator (red)
Interface design user-friendly, all interfaces are available through the wiring terminal direct connection leads, very convenient
Module size: 73mm * 50mm * 18.5mm (L * W * H)
4 mounting bolts holes, hole 3.1mm, spacing 67mm * 44.5mm

High and low level trigger selection:
S1:It is option switch for channel 1 relay.
S2:It is option switch for channel 2 relay.
S3:It is option switch for channel 3 relay.
S4:It is option switch for channel 4 relay
When the Com and low in short circuit, the relay is low level trigger, com and high end in short circuit, the relay is high level trigger.

Input Interface:
1. DC+: to connect the power positive
2. DC-: to connect the power negative
3. IN1-IN4:can set the high or low level control relay

Output Interface:
NO1-NO4: relay normally open interface, suspend the relay before pulling, then short connect with COM
COM1-COM4:relay common interface
NC1-NC4: relay normally close interface, short connect the relay with COM before pulling, then suspend

Package :2pcs 4 relay module