Rodent Terminator Wireless Monitor Syncs automatically with your Rodent Terminator Wireless Communication Up to 100 feet (30 Meters) The receiver unit constantly monitors the Rodent Terminator to indicate the status of the trap. Immediately reports any changes, including low battery and successful kill. With just 2 screws and less than 2 minutes, anyone can add the W.A.R unit to their W.A.R. ready RT-100 Rodent terminator! Easy to install -- all you need is a Philips screwdriver