<B>Wireless Infrared Monitor Alarm Entry Doorbell Chime--White Review</b><P>http://tinyurl.com/ks7hnta <P><P> Wireless Infrared Monitor Alarm Entry Doorbell Chime--White <P>Wireless installation, just place the sensor at the entrance<P>Infrared sensor detects motion and sends a signal to the receiver<P>Receiver requires 2x AA batteries, transmitter requires 1x 9V battery<P>Send audible chime sound, alerting you that somebody is approaching<P>Material: Plastic. Melody: for Alice<P>
