Instant purchase without comments is welcome! This is a wireless chime that anyone can easily install. It's battery-powered and wireless, so no wiring is required, making it safe to use even in rented houses. It can be used as a substitute for a front door intercom, as a calling chime within the same building, and also for elderly care and nursing. Model number: ya0029 Color: White Size: Please check the image Communication distance: Up to 300m Operating temperature: Approximately -10 to 60°C Contents: Battery-powered wireless chime main unit (transmitter/receiver, 1 each) Double-sided tape for installation x 1 Installation screws x 2 Transmitter battery (12V23A battery) Product Description: Wireless intercom that can be used immediately without wiring! Customize freely with 4-level volume adjustment and 36 different call melodies! The transmitter can be fixed with the included double-sided tape or screws, so it's easy to install even without electrical knowledge. Up to 300 meters of transmission distance, so you can rest assured even if the transmitter and receiver are far apart ♪ Can be used in various places such as your home, stores, offices, and warehouses. Please note: * Receiver batteries are not included. Please prepare 3 AA batteries separately. * Communication distance varies depending on the building structure, obstacles, and usage environment. We also have many unique products on sale, so please take a look from the link below. #telesight's products We support anonymous shipping via Mercari, so thank you for your cooperation. Wireless chime Intercom Wireless call No wiring required Battery-powered Front door bell Chime Wireless call Call bell Door phone Door chime Buzzer Ping pong Wireless Receiver Slave unit Doorbell Nursing buzzer Call buzzer