Product FeatureVoltage of plug-in receiver: 110V
Working range:600 feet in open area
Receiver volume Range:25-110 dB
Contact Sensor Battery Type: 1*CR1632 battery
Installation Gap Between the big door magnetic and the small door magnetic: 1cm

Simple and Modern
The wireless and portable design allows you to install the doorbell in any section of your  retail store, business, or home.
It also can be best gift to present as its new design and nice appearance, are very popular for household

Expandable
Our wireless contact sensor are expandable,you can add more accessories such as receivers,contact sensor and motion sensor as you like,just following the pairing instruction to make them paired before using is fine

Pairing instruction:
1)Plug receiver into outlet and select desired ring tone by short press receiver MUSIC button;
2)Then long press receiver VOLUME Control button for about 5-7 seconds until
you can hear receiver “ding” with the blue light will be flashed(which mean receiver get into pairing mode)
and please notice that receiver will exit the pairing mode automatically if it doesn’t get signal from sensor in 5 seconds.
3)so you should immediately Active the sensor to pair with the receiver and you will hear the tone you selected which mean your operation is successful.
4)Active the sensor to have a final check about the pairing works,if you can hear the tune you selected again,which means that your operation is completed successfully.
Package Listing
1*Contact Sensors(double-side adhesive is included)
1*Chime(Receiver)
1*CR 1632 Batteries
1*User Manual

Here at PHYSEN,we encourage you to make use of our Worry-Free Lifetime Warranty Guarantee
A happy purchasing experience is the utmost importance to us and we will happily send a product replacement if any issues arise

Product Features

• ❤【52 MELODIES & 4 VOLUME with BRIGHT LED INDICATOR】- Door chime receiver features 52 chimes and 4 level adjustable volume(25 dB to 110 dB) to meet your needs for different occasions. LED indicators are suitable for the elderly and hearing impaired
• ❤【SECURITY ALARM】- Door/ window contact senor will detect every entry and send alarm warning to the receiver to better protect your place. You will hear the doorbell chime to remind you when someone opening your door/window or your pet coming home.
• ❤ 【EXPANSION SYSTEM】- Each door sensor or receiver can be expandable,you can use them with additional 20 pieces door sensors or receivers. For home, apartment, basement, warehouse, offices, garages, and more!
• ❤【400 FT in OPEN AREA RANGE】- Wireless door chime ensures you will never miss a visitor, even if you are a few rooms away or on another floor.❤【Note】- Please don’t install it on the metal door that will effect the door sensor make signal and keep the distance is less than 0.4 inch between two door sensor.
• ❤ 【EASY TO INSTALL and QUALITY ASSURANCE 】- Plug the receiver into socket,tear off the tape behind door sensor chime then paste on the door. FCE, FCC, RoHS Certified ♥♥ 12 Months Extended Warranty & 45 Days Money Back ♥♥ . Feedback and Resolution within 24 hours for any inquiries and Complaints.