1, Wireless,easy mounting
2, Digital code system:16 digital code, low error rate,to avoid the interference or false alarms
3, The range is up to 120 metres in open area
4, With two transmitters for front and back doors (2 different sounds for distinction)
5, The receiver speaker outputs clear sounds with a choice of 23 melodies and 9 emergency sounds.
6, The transmitters have LED light indicator(Blue,Red) when actived and are water resistant.
7, The Receiver: three signal options
Music only / Light only / Music and Light
-Power:3 x AAA batteries for Receiver(not included);
1 x CR2032 button cell for Each Transmitter(included).
-Receiver Size:6.3x3.6x11.9cm;
-Transmitter Size: 4.3x1.9x8.5cm