Model : Door Chime Brand : Siemens Dimension : 106 x 170 x 46mm Material : Polycarbonate Signal : 2 Tones Voltage : 220-240V ~ 50Hz Tones : 80 dB @ 0.5m Color : White IP Rating : IP20 Mounting Center (mm) : 140.3 Working Temperature : -10 ~ 55°C Storage Temperature : -20 ~ 85°C Functional Aesthetics, Long-Term Durability, Excellent Craftmanship, Safety, Stability and Adaptability Suitable for Home, Office etc.