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Overview and Specifications:

Receiver Voltage: 100-240V AC
Battery: Lithium battery
Working Current: lt,11mA (220V AC)

Standby Current: lt,3mA (220V AC)
Volume: 10-110dB (5/10-110db)
Range: 1000ft/300m in open area
Frequency: 433 MHz
Operating Temp: -4°F-122°F (-20 – 50°C)
Receiver Size: 2.05×0.79×4.33 inches 5.2cm* 2.2cm* 11cm
Button Size: 1.46×0.59×2.60 inches 3.7cm* 1.5cm* 6.6cm
Receiver Weight: 2.07oz
Button weight: 1.02o

1. Ultra long-range wireless doorbell 1000 feet 52 melody, ring door bell chime waterproof with LED flash, 5 volume levels, sticker gift, 2 buttons and 2 plug-in receivers, receiver without battery
2. Easy to install: Simply plug the smart doorbell receiver into any standard outlet. Secure the doorbell button with the supplied double-sided tape or screws and use your system in a few seconds.
3. 1000-foot long-distance remote control: Never miss a person with a remote doorbell that has a range of 1000 feet. Wireless design allows you to install any part of an apartment, home, school or business.
4. Durable quality for multiple uses: The proven dust-proof doorbell uses advanced technology and rigorous inspection mechanisms to ensure long-lasting quality and extended service life. The operating temperature range is -4°F-122°F. Place the transmitter on the front door and the other as a mobile alarm, ideal for elderly people who need emergency assistance, or as classroom doorbells.
5. 52 ringtones and 5 volume levels: 52 unique ringtones and 5 adjustable volume levels (10db-110db), you can personalize the wireless access control alarm according to your preferences. Set this ring doorbell to a comfortable doorbell or as a loud doorbell.
LED indicators for the hearing impaired: The wireless door alarm has an LED indicator that produces a visual LED alert that allows the hearing impaired to take advantage of the system.

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