Features:Brand new and high quality. This module can be used with Arduino Special Sensor Shield V4.0. You can do some simple design about it. This is 2-Channel 5V Relay Module for Arduino PIC ARM AVR DSP. It can be able to control various appliances, and other equipments with large current. Easy to be controlled by a lots of Microcontrollers( Such as Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, PLC,TTL logic). Just use 5v input signal to control. Equiped with high-current relay, AC250V 10A, AC150V 10A; DC30V 10A , DC28V 10A. size:3.9cm x 5.1cm (1.54inch x 2.01inch).