Asahi Denki Wireless Chime Portable Receiver

Manufacturer part number: "EWS-P71" Size and weight Weight: Approx. 68g (excluding batteries) comment ○ Compact size for easy portability ○ Sound and vibration notification when receiving a message ○ Any number of receivers can be added to one transmitter ○ The radio wave has a line of sight distance of approximately 80m ○Ideal for paging and alerting in homes, stores, and offices ○There are approximately 250,000 different ID codes (identification codes), so there is no need to worry about interference. ○ A light will inform you when it's time to change the receiver's batteries Materials and raw materials - standard 1 piece Standard details Power supply: 3 AAA alkaline batteries (sold separately) Battery life: Approximately 1 year (10 uses per day, reset pattern auto, vibration + sound) * When using alkaline batteries *Battery life may be shortened depending on battery performance and usage conditions. Volume: Approx. 70dB/50cm Radio wave reach: Line of sight approx. 80m ○Frequency: 313.625MHz (specific low-power device) ○ID code: Approximately 250,000 combinations Operating temperature range: 0℃ to 40℃ External dimensions (approx.): Width 58 x Height 88 x Depth 24 mm (maximum)