Long Range Transmission: This door sensor alarm features 1 receiver and 2 sensors, covering up to 656 ft / 200 m in open areas and 164 ft / 50 m through walls, ensuring full coverage and security for all your doors58 Customizable Ringtones: Enjoy 58 different ringtones with 5 adjustable volume levels (0-110 dB).Plus, the built-in LED indicator of our door sensor chime keeps you updated on device status, giving you the freedom to personalize your experienceEasy Installation: No tools needed!Simply stick the sensors on doors, windows, or drawers using the strong adhesive backing.Make sure the gap is under 0.8 inches for optimal performance.Not for doors with larger gapsLong Battery Life: The wireless door chime powered by an internal battery that lasts over 1 year, you won’t need to replace it often.Changing the battery is a breeze with its simple, tool-free design.Convenience at its bestVersatile Use: Ideal for avoiding break-ins, monitoring kids or elderly family members, and alerting you when customers arrive.This door open alarm keeps your space secure and ensures you're always in the knowVEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, 58 Chimes & 5 Adjustable Volume, Doors Ringer Alert for Business, Store, Home, Office When Entering

Wireless Door Sensor Alarm

Easily Identify Alarm Sources

Adjustable Volume

Easy Installation

Versatile Alarm System

Ideal Gift

Door Sensor Voltage: DC12V 23A,Item Model Number: B9,Material: ABS,Product Dimensions: 3.23 x 3.23 x 1.98 in / 82 x 82 x 50.4 mm,Net Weight: 0.33 lbs / 0.15 kg