EMOS Wireless Doorbell with Button P5725

Wireless doorbell P5725 with remote control. Operating range up to 100 m in open space, 32 melodies, maximum volume of the bell 85 dB, night light function, possibility to add one more button, but not more than 4, transmission frequency 433 MHz, button power source 1 × 12 V A23 (included in the set), power source for the bell 230 V