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 options:The doorbell caller is equipped with variety of different options, allowing you to set the doorbell sound according to your preferences. design:The wireless doorbell remote caller has and, 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 few steps to complete. Stable quality materials:Made of materials, the doorbell caller has 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 the actual environment) Receiver operating temperature -10 degree C -+45 degree C You can get:1 transmitter+1 receiver Transmission:The wireless doorbell remote pager adopts advanced technology and can transmit signals over remote, ensuring that you don't lost any visitors. Multiple options:The doorbell caller is equipped with variety of different options, allowing you to set the doorbell sound according to your preferences. Design:The wireless doorbell remote caller has and, 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 few steps to complete. Stable quality materials:Made of materials, the doorbell caller has long service life, strong stability, and is not prone to malfunctions, providing convenience for your life.