Amazon Selling Price: ¥2780 Opened for inspection, but it is a new, unused item. Everything shown in the actual product photos will be sent, and items with outer boxes will be shipped as is. 【Self-Generating Design & Easy Installation】 The transmitter automatically generates power every time the button is pressed, eliminating the need for battery replacement. It's environmentally friendly, battery-free, and offers a sustainable design with zero running costs. Installation is also easy; the transmitter can be installed in 3 seconds with double-sided tape, requiring no construction, making it safe for those who don't want to damage walls or live in rental properties. The receiver can be used immediately by plugging it into an outlet. It can also be fixed with screws if necessary. Its compact size is ideal for narrow Japanese entrances and for adding multiple doors. (※Communication may become unstable if used near metal doors. Be sure to choose a location away from metal structures.) 【Wide Range Communication & Expandable】 Communication distance of up to 300m in an area without obstacles. The sound reaches even in complex Japanese houses, such as detached houses with gardens, apartment hallways, and entrances. (※Differences in the installation environment may affect the communication distance.) Multiple sub-receivers can be added, allowing installation in separate rooms or on the second floor. You can receive chime notifications anywhere in the house when visitors arrive, making it useful for monitoring the elderly. 【Weatherproof Design & Memory Function】 It clears the IP44 waterproof and dustproof standards, and is suitable for humidity during the rainy season and snowfall. It operates in a temperature environment of -20℃ to 60℃, supporting nationwide use from Hokkaido to Okinawa. It has a backup function that remembers settings even during power outages, providing peace of mind during disasters. It works even in sudden rain or dusty environments when installed outside the entrance. 【Over 60 Ringtone Types & 7-Level Volume Adjustment】 Built-in over 60 types of chime ringtones familiar to Japanese life. You can change the chime sound according to the season or visitors. The wireless chime volume can be adjusted in 7 levels from 0-115dB, and can be heard on the second floor. It also notifies with light in silent mode. It can be used without stress in households with children or pets, and in areas with nighttime noise regulations. Loud 115db Chime 7-Level Volume Adjustment LED Indication Doorbell Wireless 300M Wireless Range Doorbell Notification with Light No Construction Required Sound and Light Call Chime Simple Chime Visitor Response Memory Function Expandable Can be Heard on the Second Floor Wireless Apartment/Restaurant/Nursing Care/Entrance (1 Transmitter 2 Receivers)