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Feature

Long Range Working Transmission, up to 1000ft in open air. Strong signal remote door bell for glass/metal/wood... door.
Easy to expand 10+ extra door bells or ring chimes. Waterproof transmitter door bell.
52 ringtones alarm and four levels volume to adjust and they will keep their settings when power is removed.
Easy to Install - no batteries required for plug in door chime; Use sticky pad or anchors & screws to mount the doorbells (battery powered).
Warranty - Friendly customer service and 18 months warranty; with CE, FCC, RoHS certified.

Description

Specifications:
Size for Receiver: 3.1*3.1*1 inch;Transmitter:3.4*1.25*0.67 inch
Working distance range: 900ft~1000ft (in an open air, no obstacles)
Ring tone: 52 pieces selectable options
Volume: 4-level adjustable volume (30 to 110 db)
Receiver Power: AC 110V (US)
Transmitter Power: 1 x 12V Alkaline Type A23 battery (included)
Power consumption of receiver: <0.5W
Power consumption of transmitter: <10mW
Working temperature: -30~70
Rating of waterproof: IP55
There is blue LED Flashing on transmitter and receiver to alert When you press the transmitter, and the receiver receiving the signal.

Usage:
Commercial/Residential/Assisted Living (It can be used as paging devices for elderly care and nursing residents.)

How to set different ring tone for each transmitter
Firstly, please plug receiver in to a regular wall socket, and please long press "volume control button" on receiver for 5-7 seconds untill you hear "ding" with blue light, that means entering the pairing mode and the following steps will help you make them paired:
1. Firstly please seclect the music you want by pressing "music control button" on receiver.
2. Then long press "volume button" on receiver about 5-7 second till you can hear receiver "ding" and there will be flash blue light. At this moment, please immediately press transmitter button (for 2 or 3 times if need) to pair with receiver.
3. Finally you will hear the music you set, which means your operating is completed successfully.
4. The operation method is the same for adding other receiver or transmitter.

Note:
The battery for transmitter has been installed. Please pull out the insulating strip before using.

Package Includes
2*Transmitter
1*Receiver
4*Screws & Anchors
1*Screwdriver
2*Double-Sided Adhesive Tape
2*12V A23 Alkaline battery for transmitter
1*User Manual