The transmitter also has a 12 inch telescopic antenna to transmit the signal up to 500 feet. The receiver has a volume control and is capable of monitoring up to four different zones , each with a distinct tone. Multiple transmitters and receivers may be used to monitor different areas. Other accessories may be viewed on the accessories page. This product comes with a one year warranty.
Installation is very simple.
No electrician is necessary. A chain saw or lawn edger works well to dig a trench about 3 inches deep to bury the wire or you may rent a gas powered trencher from the local rental center.