Review on ELEPOWSTAR Motion Detector Alarm: 500ft Wireless Doorbell for Home Security System, Shops, Offices, Factories by Mohmed Burt

Not knowing someone has entered the office can be very scary! This device is exactly what I was looking for. I've been using it for a week and it's great. I always know when someone has entered the building (assuming I'm close to the recipient). The kit included batteries for the sensor and everything needed to mount the sensor to the wall, although I only placed it at the base of the artificial tree. The receiver is plugged into an outlet in my office. I contacted the manufacturer to get a second receiver to use in a different part of the building. I didn't spend much time listening to all the tunes; there are many. The volume control works as it should. I recommend this article!