New 5V 4 Channel Relay Module with Optocoupler High/Low Level Trigger
Module description: 1. Maximum load on normally open pin: AC 250V/10A, DC 30V/10A. 2. Trigger current 5mA; 3. Module can be set high level or low level trigger by jumper wire; 4. Power indicator light (green), relay status indicator light (red); 5. Module size: 73mm * 50mm* 18.5mm.
Module interface specifications: 1. DC+ : DC power supply positive pole 2. DC- : 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
High or low level trigger option: 1. S1~S4:They are option switch for relay 1~4; 2. It is low level triger if COM pin connect to LOW pin; 3. It is high level triger if COM connect to High.
Package contents: 1 x 4-Channel Relay Module with Optocoupler