Doorbell,Wireless Doorbell Waterproof Door Bell with 38 Melodies to Choose Adjustable Volume 1 Receiver 1 doorbell

This Wireless USB Doorbell features a professional waterproof design, can penetrate through 3-4 walls, with a range of up to 150 meters in open areas. It has 3-level volume adjustment and 38 music options for personalization. Ideal for use in villas, apartments, offices, shops, warehouses, and more.

Specifications:
Colour: White
Working voltage: 5V (USB powered) 
Power consumption: ≤0.25W 
Working frequency: 433.92 
MHz Operating temperature: -10°C~+45°C 
Controllable volume: ≥50dB/1m 
Remote control distance: ≥150 meters (unobstructed open space) 
Transmitter battery model: CR2032 
Transmitter power consumption: <10mW 
USB interface receiver size: 43*41*32mm / 1.7*1.6*1.3in
Transmitter size: 77*45*16mm / 3*1.8*0.6in
Package size: 13*11*5cm / 5.1*4.3*2in
Package weight: 
1 Receiver 1 Doorbell: 78g / 2.8oz
1 Receiver 2 Doorbell: 105g / 3.7oz

Package list:
As you choose