Wireless Tunnel Rail Infrared Sensor for Vehicle Height Monitoring DIY Kit

IrDA Infrared 4Mb IR PCB module port w/cable PC Window xp/Vista/7/8 Linux 64

DIY Infrared Tunnel Height Monitoring System with Wireless Sensing Function

HX1838 VS1838 Infrared Wireless Remote Control Sensor module Kit

PCB Based Wireless Infrared Height Detection Kit for Tunnel Rail Applications

Infrared Vehicle Height Detection System for Tunnel Rail with Alarm Output

HX1838 VS1838 Infrared Wireless Remote Control Sensor module Kit

DIY Electronic Kit for Infrared Tunnel Height Detection with Alarm Function