SMAKN&reg; 5v 2-channel High Level Solid State Relay Board for Arduino Uno Duemilanove Mega2560 Mega1280 ARM DSP PIC OMRON 5V 240V solid state relay 2A, output with resistance type fuse 240V 2A. size: 25*34*25 (length * width * height) net weight: 13g the input power supply: 5V DC (160MA)