Specification: - This is an 8 Channel Infrared Detection Tracking Sensor Module. - Working Voltage: 5V - Fixed Hole Size: 3mm/0.12inch. - Adopt Infrared detection, high ability of anti-interference. - Easy Assembly - With two 3mm positioning holes on the board for easily assemble with other robots. - Applications for Robot, Smart Car, Laboratory, DIY. - Material: Plastic+Electronic Component - Size: 67x17mm/2.64x0.67inch