Suriora Wireless Welcome Alert Door Bell: Infrared Motion Sensor Alarm Chime with LED -38 Chime Tunes ( 1 Receiver and 1 Sensor)
As for this visitor chime, there are no wires to run, no installation hassles. You just need to put in the batteries(not included), and place the wireless motion sensor and alarm receiver wherever you prefer. Instructions manual will give you plenty of tips to maximize the system's effectiveness.
The portable wireless plug-in receiver plugs into any standard outlet. The sensor uses 3 AAA batteries (Not Included). Detection time delay in between motion sensor alerts is configurable from 15 seconds to 30 seconds, just place the sensor at the entrance to your driveway and the receiver inside your home.
The receiver of the arrival/departure chime is a doorbell design with 38 different ringtones for personal preferences. Use the external button "music" to finish. The function of volume adjustment: there are three kinds of volume (high, middle, low) for choice. Adjust sound and silence.
It detects movements and sends a signal to the receiver from up to 328 feet (70m) away.Alerts you when someone enters your driveway, walking path, doorway or business, such as visitors, vehicles, intruders, animals or kids coming or going. Advanced notice when someone or something enters before they surprise you.Use it to monitor any area inside or outside, its wireless so you can place it anywhere in the house or even take it from room to room.