THIS TESTER IS INVALUABLE FOR GHOST TRANSMITTERS. For about 3 months Interlogix had a manufacturing issue with transmitters that would get stuck on transmitting continually.  The only way to locate the bad transmitter was using this tool which tells you which transmitters are continually transmitting or if you want to check on transmitters even working is great too.

These testing portable transmitter sniffer is probably impossible to find so if you want an invaluable tool for your installations or service needs look no further.

The device is built with high-quality materials and is in excellent working condition. It has been tested and verified to ensure that it meets the necessary standards for reliable motion detection. The Interlogix 60-401 RF Sniffer Installation Tool is an essential tool for any Interlogix home security system.