This alarm  mounts to the ceiling where it can detect motion within 360 degree circle up to 20 feet away.
If motion is detected the unit will emit a 100dB alarm. 
When the alarm is activated by motion after the entry delay the alarm will sound for 1 minute if no further motion is detected. 
This unit includes an remote controls that operate up to 25’ away from the alarm. 
It has a 30-45 second exit delay and a 10 second entry delay. 
It operates on 6 AA batteries which are not included.
The unit can also be powered by a 9v volt adapter that is not included.
This alarm comes with 1 remote.

Features:
Infrared remote control for arm/disarm/panic.
Full 360 degree motion detector senses motion and activates alarm.
Built-in 100db alarm-Loud enough to scare away the intruders but not so loud that will affect
hearing aids and the elderly.
Battery operated works on 6pcs of AA batteries. (not included)
Remote control will operate unit from 30ft away.
Material: ResinSafety Certificate: CEDetection Scope (angle/range): PIR at 2.8 M height detect more than 5 Meters circle.
Operational Voltage:9V
Battery Life: Remote:6 Months; Main unit:90 Days.
Battery Included: Remote battery included
Working Temperature:10~30 centigrade

One Year Warranty with a 30-Day Money Back Satisfaction Guarantee - Order Here On-line or Call 1-800-571-9860 Mon-Fri 10:AM-6:PM Eastern.