Wireless Doorbell with 1 Button 3 Receivers,Door Bell,1300FT/400M Ultra-Long Range,55 Chimes 5 Volume,IP55 Waterproof,110 db Extra Loud with Flashing Light,for Home/Classroom/Office/Warehouse

1300FT/400M Long-Range TransmissionWhether you are upstairs or in the backyard, the 1300ft wireless transmission range of this doorbell provides peace of mind. It features multiple learning codes and a stable signal design with strong anti-interference capability, and can be paired with other wireless doorbells for unlimited expansion. You can also assign different ringtones to different buttons, so youll always know exactly which door has been triggered. Plug-in ReceiverOperates at 100260V. Choose from 55 classic chimes to suit any occasion. The volume is adjustable in 5 levels (0110dB), with a mute mode available.

The ultra-loud 110dB sound and LED flashing light make it ideal for the hearing impaired. Features memory functionyour last settings are retained even after unplugging, no need to reset. Battery-Powered ButtonThe IP55 dustproof and waterproof button can withstand all kinds of weather, whether its snow, rain, or sunshine.
Operating temperature range: -22°F to 158°F (-30°C to 70°C). Powered by a 12V 23A battery, it features ultra-low power consumption with a lifespan of up to 3 years, so you dont need to replace the battery frequently. Easy InstallationThe wireless doorbell is very easy to install with no complex wiring or special tools required. Ready to use right out of the boxsimply plug the receiver into a power outlet, remove the insulation strip from the button, and attach the button to the wall using the included double-sided tape or screws. Installation can be completed in just 30 seconds