Door Chime, Wireless Door Sensor Alarm for Business Store Home Office, Easy to Install, 600ft Long Range, Loud Clear 58 Chimes, 5 Volume Levels, LED Light Flash, 1 Door Sensor + 1 Receiver
- ...T Working Rang - Wireless door sensor chime with working rang up to 600ft in open area to cover your house or store, ensures you will never miss a visitor. Note: The battery level will affect the signal receiving range. It is recommended to change it once every 12 months..
- Expandable - Each door sensor or receiver can be expandable,you can use them with additional COTINSE door sensors or doorbells. You can install them in your dining room, bedroom, living room, garage, yard, or your store and office..
- Easy to Install to Use - Just plug the doorbell receiver into any standard outlet and tear the double-sided adhesive tape on the back of door sensor(or screw mounted) to stick to the door or window, please take the insulating paper away before using the sensor..