Wireless Doorbell DC 5V RF433 MHz Remote Control Receiver USB Smart Door Bell 38 Music For Home Bed Emergent Call

• Wireless Connection: No need for complicated wiring, the doorbell connects wirelessly to your home security system 38 Songs Smart Alarm: Choose from 38 different songs to play when the doorbell rings, adding a personal touch to your home security Waterproof Design: The doorbell is designed to withstand harsh weather conditions, ensuring it remains functional even in rainy seasons TechnicalParameter 1.Working Voltage: 5V USB Powered 2. Power consumption: ≤0.25W 3.Operating frequency: 433.92 MHz 4. Working temperature: -10°C~+45°C 5. Controllable volume: 50dB/lm 6.Remote control distance: 200 meters accessible in open spaces 7. USB interface receiver size: L60xW60xH20mm 8. Transmitter battery model: CR2032 9: Transmission power consumption: 10mV 10.Transmitter size: L70xW40xH12mm