Solar Powered Waterproof Wireless Doorbell with Smart Chime 1 Button Transmitter and 1 Receiver Black Features: - Intelligent light sensing: Equipped with a night light function that activates in low light conditions and turns off automatically during daylight. - Strong signal penetration: Stable long-distance transmission ensures reliable signal reception. - 52 selectable melodies: High-quality, clear chime tones with a variety of musical options to suit personal preference. - Adjustable volume in 4 levels: Customizable sound settings allow for optimal audibility in any environment. - Energy efficient design: The solar-powered transmitter reduces the need for frequent battery replacements and supports eco-friendly operation. Product Descriptions: - Solar-powered operation: Harnesses sunlight for charging, reducing energy costs and environmental impact. - Low electromagnetic emission: Designed for safe use around children and elderly individuals. - Flexible pairing capability: One transmitter can be paired with multiple receivers, and one receiver can connect to multiple transmitters. Supports power-off memory function. Specifications: - Receiver operating voltage: 90260V - Receiver standby current: 10mA - Receiver operating current: 60mA - Receiver operating frequency: 433MHz - Receiver power: 2W - Receiver volume adjustment range: 2080dB (4-level adjustment) - Transmitter battery: 150mAh polymer lithium battery - Transmitter solar panel output: 5.5V 25mA 0.13W - Transmitter operating current: 12mA - Transmission range: Up to 200300 meters in open areas - Transmitter waterproof rating: IP65 - Number of melodies: 52 - Color: Black - Transmitter dimensions: 90 x 35 x 15mm - Receiver dimensions: 85 x 85 x 26mm Pairing Instructions: Plug the receiver into a power outlet. Press and hold the volume button for 6 seconds until the blue LED stays on. Press the transmitter button. When the receivers blue LED flashes, pairing is successful. Pairing must be completed within 6 seconds to succeed. Note: One transmitter can pair with multiple receivers, and one receiver can pair with multiple transmitters. The system retains settings after power loss.