Wireless Doorbell Household No Need For Batteries Large Volume Pager Features: transmission: The wireless doorbell remote pager adopts advanced technology and can transmit signals over remote, ensuring that you don't lost any visitors. Multiple music options: The doorbell caller is equipped with a variety of different music options, allowing you to set the doorbell sound according to your preferences. design: The wireless doorbell remote caller has a and design, suitable for indoor and outdoor use, ensuring that long-term use is not affected. Easy to install: The doorbell caller does not require wiring and is easy and fast to install, requiring a few steps to complete. Stable quality materials: Made of materials, the doorbell caller has a long service life, strong stability, and is not prone to malfunctions, providing convenience for your life. Product Description: level: IP44 Working voltage: AC 100~250V50/60HZ Working frequency: 433.92MHz Standby power consumption: 0.25W Music: 60 Volume: 5th gear Controllable volume: 0-90dB Receiving distance: 200 meters (according to the data, the testing distance is not available for laboratory land purchase, and the actual distance may vary depending on the actual environment) Receiver operating temperature -10 ° C -+45 ° C You can get: 1 transmitter+1 receiver Features: transmission: The wireless doorbell remote pager adopts advanced technology and can transmit signals over remote, ensuring that you don't lost any visitors. Multiple music options: The doorbell caller is equipped with a variety of different music options, allowing you to set the doorbell sound according to your preferences. design: The wireless doorbell remote caller has a and design, suitable for indoor and outdoor use, ensuring that long-term use is not affected. Easy to install: The doorbell caller does not require wiring and is easy and fast to install, requiring a few steps to complete.