2 Channel 5V Relay Module With Low Level Trigger, Can Be Controlled By Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic Types Of Wire Sleeves at Paul Hines blog 10m 304 rustfrit stltrd bldt fiskeri lftekabel Grandado Guardacabo Acero Galvanizado Guardacabos. This is a 5V 2 Channel Relay interface board. It can be used to control various appliances and other equipment with large current. It can be controlled directly by Micro controller (Raspberry Pi, Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). Specifications: 5V, 2 Channel Relay Interface Board Equipped with high current relay AC250V 10A ; DC30V 10A Standard interface that can be controlled directly by microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) Indication LEDs for Relay output status It activates on low level There are 4 fixing screw holes around the board, the hole diameter is 3. 1mm, which is convenient for installation and fixing. The relay uses high quality relay, single pole double throw. Optocoupler isolation, good anti interference. Low level pull in, high level release. The status indicator light is on when it is engaged, and it is off when it is released. PCB Color: Black Weight: 31g Dimensions (L x W x H): 51mm x 39mm x 19mm