Product Name: 12V 4-Channel Relay Module High Level Triger Relay shield for Arduino

Module description:
1. Maximum load on normally open pin: AC 250V/10A, DC 30V/10A.
2. Trigger current 5mA;
3. Power indicator light (green), relay status indicator light (red);
4.
Module size: 72x45x 18.5 mm.
Module interface specifications: 1.
VCC: DC power supply positive pole 2.
GND: DC power supply negative pole 3.
IN1~IN4: relay signal triggering pin
Relay output:
1.
Normally closed pin (NC1~NC4): relay normally closed pin
2.
Common pin (COM1~COM4): relay common pin
3.
Normally opened pin (NO1~NO4): relay normally opened pin