Wireless Door Chime, BITIWEND Door Alarm Sensor Door Open Window Alarm with 58 Chimes 5 Volume Level 600ft Range LED Indicator for Office/Home/Store When Entering;

Bitiwend wireless doorbells are expandable and add more receivers and transmitters including accessories like door and motion sensor.
One doorbell receiver can work with 20 transmitters at most and each transmitter can be set to different or same chime/music.

Specifications:
Maximum 1000ft /300m operating range in open area
Transmitter battery: CR2032, 3V Battery
Transmitter power consumption: <10mW
Volume range: 25 to 110dB
Operating Temperature: 5°F to 140°F or -15°C to 60°C
Dimension: Receiver: 3.17 x 3.19 x 1.12in / 80.5 x 81 x 28

Package List:
3*transmitter
2*receivers
3*screws&Anchors
1*screwdriver
3*double-sided adhesive tape
1*user manual
3*CR2032 battery

How to Pair
Please make pairng BEFORE installtion.

1. Pull out the strip on the push button and plug the receiver into outlet.
2. press the forward or backward button to select the rintone you want.
3. After choosen the ringtone,then long press receiver volume button for about 5-7 seconds until hear receiver "ding" with blue led light flashes which mean receiver get into pairing mode and it will exit it automatically if it doesn't get signal from transmitter in 5 seconds.
4.When receiver get into pairing mode,you should immediately press the push button to pair with the receiver in 5 seconds.You will hear the tone you selected which mean your operation is successfully.

If you still have questions of pairing, please contact with our customer service team to get video.

NOTE:Warranty Promise:
This units sold with 30 days money back and 1 year warranty from the date of purchase