Asahi Denki Battery-free wireless chime set

Manufacturer part number: "WC-S6040AC" Size and weight Weight of receiver: Approx. 88g Push button transmitter: Approx. 66g (including mounting holder) comment ○It is a wireless type that does not require wiring, so it is easy to install! ○The receiver simply needs to be plugged into an outlet, and the transmitter generates power when pressed, so no batteries are required. The radio wave has a line-of-sight range of approximately 90m. It is ideal for use as a paging or alarm device in homes, stores, and offices. ○There are approximately 1 million possible ID codes (identification codes), so there is no need to worry about interference. ○8 types of notification sounds to choose from. ○Waterproof push button that can be used outdoors. *Please avoid installing the product in locations where it will be directly exposed to large amounts of water (such as heavy rain or typhoon rain). standard 1 set Standard details [Receiver] Power supply: AC100V 50/60Hz External dimensions (approx.): Width 57 x Height 106 x Depth 39 mm ○Volume: Approx. 85dB/50cm *At maximum volume ○Frequency: 314.8MHz (specific low-power device) ○ID code: Approximately 1 million Radio wave reach: Line of sight approx. 90m Operating temperature range: 0℃ to 40℃ Accessories: 2 mounting screws (φ3×14mm), 2 sleeves (φ6×24mm), 1 double-sided tape [Transmitter] Power source: Generates power by pressing (no batteries required) External dimensions (approx.): Width 35 x Height 87 x Depth 33 mm (including mounting holder) Waterproof: IPX4 splash-proof and rain-proof