Wireless Door Sensor Alarm Chime, BITIWEND Home Security Window Entry Alert With Operating Range 600 feet/52 Chimes For Home/Garage/Shop (3 Door Sensors & 2 Receiver)
- 【New design & Wide Working Range】: The wireless and portable design allows you to install the doorbell anywhere in your home, work, retail store or business.The range of wireless receiver up to 600 feet in open area. Magnetic door sensor will automatically trigger the receiver when separated and the receiver will alert immediately whenever the door or windows is opened.
- 【Expandable】 Each wireless receivers can work with 20 transmitters at most and each transmitter can add more receivers.
- 【52 Music with Loud dB】 52 unique ringtones/chimes with 30-110dB volume range allow your wireless door entry alert system to meet any need.
- 【Mini Contact Sensor】 Door sensor part 1: 2.5cm * 1cm * 0.8cm; Part 2: 4.5cm * 2.5cm* 0.9cm. The Magnetic sensors are small size and can be installed or placed at any in door position.
- 【Easy to Install】 Requires no wiring, Just plug the door entry alarm receiver into any standard outlet, Tear the double sides adhesive tape which on the black of mini door sensor and stick them to the door or window.