TRK 5180

key features:

• The push button transmitter (Outdoor Unit) is powered by 1pcs 12V 32A battery. Indoor receiver unit is powered by 2pcs AA batteries. (Battery is not included).
• 38 melodies and 3 levels adjustable voice volume, reminding you the coming of your guests by lovely songs.
• Design with led indicator, more practical and convenient.
• All day long anti-interference system, avoid interferences outside or between neighbors.
• Simple and easy wireless installation, just plug and go; save troubles