SIZE : 54MM * 75MM
This is a 5V 4-Channel Relay interface board,Be able to control various appliances, and other equipments with large current.It can be controlled directly by Microcontroller(Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) .
DESCRIPTION:Working voltage: DC 3.3V-5V
Working current: try to choose more than 1A power supply
Working temperature: - 10oC - +50oC
Mounting aperture: M3 screws
Detection range: 1mm to 60 CM adjustable, the closer the performance more stable, white reflects the farthest distance.