The EMOS P5733G wireless doorbell does not require a battery, it is a great solution for every apartment and even office. A waterproof button powered by one CR2032 battery (included), thanks to its high tightness, it can be mounted next to the gate. The receiver is powered by an ordinary traditional mains socket. Additionally, the wireless bell has clearly visible optical signaling of the bell and the button. The product is equipped with 36 melodies and a 4-level volume control. The maximum ring volume is 90dB.