Product: Govee Door Open Chime Upgraded, 2 Magnetic Door Alarm Sensor for Home/Bussiness, Door Alarms for Kids Safety, 1 Wireless Receiver (328 Feet, 36 Tunes, 5 Volume Levels, LED Indicators)
Brand: Govee
Govee Wireless Door Open Sensor with Chime, Take Care Of Your Family and Business
Mount the door sensor on the door and plug receiver into any standard outlet, and this door entry alarm is ready to work. When the two parts of the door alarm sensor are separated, door sensor will be triggered, then the receiver will get signal from the sensor For home security, you can get alert when deter break-ins or children/pets coming out.
For business use, ensure never miss a customer when they come

Specifications:
Operating Range: 330ft (100m in open area)
Volume Range:110-80-60-40-0 dB
Chime Option: 36 Chime Options
Plug- in Receiver Voltage: AC 110~240V
Working Frequency: 433.92+-0.5Mhz
Sensor Battery: 2*12V 23A(Included)
Battery Time: About 12 months(Depend on the Triggered frequency)

Package Contents: 
1* Door sensor
1 *Receiver
1 * User Manual
2* 3M Tape
Detection and Alarm: Act like a vigilant soldier, escorting your safety. The chime receiver will alarm immediately when the magnetic door sensor separated 2cm.
Wide Working Range: The wireless door chime offer up to 328ft detection range. Far enough to cover every window and door in your house and store.
110dB with 5 Volume Levels: Wireless Door Open Sensor is loud enough to detects entry, prevent kids, babies or pets going out the house, protecting your home or office.
Customized Alarm Chime: The chime choices include a doorbell, barking dog, siren and various snippets of well known songs. And the LED indicator creates a visual LED alert for the hearing impaired.
Easy Setup and Installation: The doorbell chime has already been paired out of box, simply plug in the receiver and choose the ringtones and volume you’d like, tear the double sides adhesive tapes and stick the sensor to the door or window.

Search query: wifi door sensor
Relevance: Exact