The reliable EMOS P5763 doorbell is made for both private homes and offices. The bell has 16 ringtones. The external unit can reach the doorbell from a range of up to 120 m, so you can place it on a remote entrance gate, for example. The bell needs batteries for its operation, which will come in handy if you plan to move the bell from place to place. Radio waves transmit the signal between the button and the bell.