The Motion-activated Doorbell will alert you when someone enters detection zone. Businesses can benefit by having one at the front door for retail customers and back door for deliveries. Home owners can utilize it at the front door, back door, mailbox, garage and driveway.

Main Features:

Automatically ring the doorbell when a motion is detected 

Low False Alarm Motion Sensor, detects motion up to 16FT x 110° 

52 ringtones(16 chord)to choose from and 4 steps volume control(up to 110dB) 

Simple to use and easy-to-install without the hassle of running any wires 

With up to 500FT operating range in open space,100m audible range 

Eye-catching indicators alert you when the doorbell can't be heard 

Expandable, allowing you to pair various transmitters to the receiver,

Using learning code to prevent interference from other wireless transmitters 

Smart memory, automatically save selected ringtone after a power outage 

High quality, approved with CE,FCC,RoHS certification