| Features:1¡¢5 Functions: The wireless doorbell has five function reminders, such as welcome, doorbell, alarm, colorful lights, and night light 2¡¢Humanized Design: The commercial door bell has colorful LED lights, with regulable brightness, regulable volume, battery replacement memory and other humanized design 3¡¢Long Distance Transmission: The infrared doorbell can transmit long distance, up to 280 meters in open spaces, suitable for larger places and higher floors 4¡¢40mm Speaker: The motion sensor doorbell adopts independent alarm 40mm speaker, 8 chord music chip, the maximum is 113dB 5¡¢Sensing Angle: The infrared doorbell senses 100 degrees horizontally, 15 degrees vertically, 2 to 8met… | |