Door Entry Burglar Alarm Burglar Alarm Doorbell Anti-Theft Reusable Wireless Home Safety Door for Window Security System Monitoring Projects

Features: Small and exquisite, easy to install, easy to paste by double-sided adhesive. The standby time of 3 *1.5V LR44 button battery (included in the machine) can be up to one year, and the replacement is convenient. Simply paste the main and auxiliary parts on the door and door frame, or two windows, and align them. Once the thieves pry the door, pry the window and attempt to steal, the alarm can send out a strong 90dB alarm sound to frighten off the thieves and remind the owner. Opening doors and windows can be controlled by switches. They are suitable for anti-theft of residential buildings, offices, shop counters, etc. The wireless window and door alarm with its two chime setting will work as both a door alarm and a door chime. Simply flip the switch, and you door alarm will emit a pleasant door chime sound during the day. If you are leaving your home for the night or even going to bed, switch the alarm back to the alarm chime. Spezifikations: Alarm volume: 105 dB Material: High Quality ABS Battery model: 3pcs LR44 button batteries (Included) Battery life: Standby for about one year Size: 5.4*3.6*2.1cm/2.1*1.4*0.8in Package Weight: 43g/1.5oz Package List: 1 * Doorbell  (Batteries Included) 1 * Door Sensor 1 * User Manual