XIANQI 300M Ultra-Long Wireless RangeThe wireless doorbell has a wireless range of up to 300M, ensuring you won't miss any visitors even if you're a few rooms away or on another floor. The doorbell kit includes 2 plug-in receivers and a transmitter that won't interfere with other devices in your home or those in your neighbor's. 60 Melodious ringtonesThe wireless doorbell with two receivers has 60 melodies and 5 adjustable volume levels, with a maximum volume of 115 dB; you can enjoy a sweet melody whenever someone knocks on the door. An eye-catching LED indicator can alert people who are hearing impaired or who don't need the doorbell sound temporarily. Waterproof ; DurableIP55 waterproof rating ensures that the transmitter will work well even in harsh weather conditions, suitable for outdoor use. Memory FunctionWireless doorbell retains the melody and volume you set last time after a power failure, you don't need to reset it again, bringing you a great experience. Easy To InstallSimply plug the receiver into a power outlet, then attach the transmitter to the wall using the screws or patches provided, and you're done. Perfect for use at home, office, garage, shop, apartment, villa, garden. - Music setting: After selecting music, press and hold the volume key for 4 seconds, the receiver will light up and enter the learning state; when the transmitter is pressed, the receiver will flash the light and emit a ringtone, successfully locking the ringtone. - Receiver free matching mode: long press the receiver volume key for 4 seconds, the receiver lights up and enters the learning state; when the transmitter is pressed, the receiver flashes and rings, indicating that the matching is complete. Specification Material: ABS Colour: Black Ringtones: 60 polyphonic music Volume: 5 levels of volume Power supply voltage: 110-220 (V) Range of use: 300 meters in a straight line on the open space Notice: 1. It is forbidden for non-professionals to open the equipment, so as not to damage the precision electronic components. 2. There is a high-voltage circuit in the device, please do not open it when working. Or it could cause an electric shock. 3. Proper use of the doorbell can give it a long life. 4. Functional range may be adversely affected by one or more of the following factors: weather, radio frequency interference, low transmitter battery. 5. Old batteries can also corrode connections and damage buttons or doorbells. If you find that the functional range of the battery is shortened, please replace it with a new battery in time. 6. It is forbidden to install on metal objects (such as iron doors, stainless steel doors, etc.) Package Includes: 1 x Push Button/Transmitter 2 x Plug-in Receivers 1 x Patch 2 x Screws 1 x User Manual