REV 220102 door chime, electric 2 tone gong, 9V DC, up to 75dB, white

Wired, or battery? This two-tone chime gives you the freedom to choose if it is not possible to connect the bell to the regular circuit via a transformer. If not already available, a bell button is required to operate this doorbell. A 9V block battery is required for battery operation (not included) The case of the Zweiklang gong is easy to clean and antistatic. Modern housing made of white plastic with polka dot optics Electromechanical gong with sound iron for surface-mounting. Operating voltage 9V DC, or 8V AC 1A transformer connection. Volume max. 75 dB Assembly instructions are included. Dimensions (WxHxD): 117 x 118 x 45 mm, weight: 262g. color: white, Weight: 0.57761112644 pounds, Manufacturer: REV Ritter GmbH