4 Pcs MELIFE 2 Channel DC 5V Relay Module Low Level Trigger Expansion Board for Arduino UNO R3 DSP ARM PIC AVR STM32 Raspberry Pi with Optocoupler

Description: Maximum load: AC 125V/10A; AC 250V/10A; DC 30V/10A; DC 28V/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), relay state indicator (red) Interface design user-friendly, all interfaces are available through the wiring terminal direct connection leads, very convenient Module size: 50mm * 41mm * 18.5mm (L * W * H) 4 mounting bolts holes, hole 3.1mm, spacing 44.5mm * 35.5mm Module Port: DC+: DC power supply positive DC-: DC power supply negative IN1: Channel 1 signal trigger terminal IN2: Channel 2 signal trigger terminal Relay Output: NC1: Channel 1 relay normally closed pin COM1: Channel 1 relay common pin NO1: Channel 1 relay normally opened pin NC2: Channel 2 relay normally closed pin COM2: Channel 2 relay common pin NO2: Channel 2 relay normally opened pin High And Low Level Trigger Option: 1. S1: It is option switch for channel 1 relay 2. S2: It is option switch for channel 2 relay Package Includes: 4 x 2 Channel DC 5V Relay Module Low Level Trigger Expansion Board