ITEM NAME:Low Level One Channel Relay Module 5V DC for PIC ARM J4C1 Low Level One Channel Relay Module 5V DC for PIC ARM J4C1 Indicator light: green for switch, red one for power. Built in a potentiometer for sensitivity control. Can be used as a single chip minicomputer board module, also can be used as a home appliance control. Product Name : Relay Module Output Channel : 1 Trigger Mode : Low Level Working Voltage : 5V Relay Load Voltage : AC 125V/250V 10A,DC 28V/30V 10A Total Size : 43 x 17 x 19mm/ 1.7" x 0.67" x 0.75"(L*W*T) Material : Electronic Components, Plastic Package Content : 1 x Relay Module Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..Output Channel : 1.