Main features Design Product colour White Indicator light Yes Certification UL / FCC / CE / WEEE / REACH / RoHS Features Connection type Wireless WLAN Yes WLAN frequency 2.4 GHz Number of melodies 20 Volume (dB) 72 dB Plug & Play Yes Power Power source AC input voltage 100 - 240 V Power plug type F Operating conditions Temperature range in operation 10 - 40 ° C Relative humidity in operation 0 - 95% Weight 120 g Packaging data Packaging width 97 mm Packaging depth 102 mm Packaging height 172 mm Scope of delivery Quick start overview YesC Relative humidity in operation 0 - 95% Weight and dimensions Width 55 mm Depth 35 mm Height 100 mm Weight 120 g Packaging data Packaging width 97 mm Packaging depth 102 mm Packaging height 172.5 mm Scope of delivery Quick start overview Yes Mounting bracket included Yes Number 1.