1、With Motion Sensing Light: Automatically lights up when detects movement, turn off when someone leaves. The receiver can be used as a night light, place it in the bedroom, children's room, living room light, kitchen and other locations 2、USB Powered: Powered by USB, the wireless smart doorbell offers flexible placement and global compatibility. Its vibrant lighting is ideal for the deaf and elderly. 3、4 Modes: With 4 unique modes, the doorbell caters to diverse preferences. Choose between flashing only, ringing only, flashing and ringing, or staying lit and flashing. 4、Waterproof: With an IP55 waterproof rating and built in waterproof tape, the doorbell button ensures reliable operation in all weather conditions. 5、Label Cover and Door Distinguish: Button is equipped with label cover, you can place the house number and other reminder information; With front and back doors distinguish function, press different buttons, the receiver will emit different music. Item Type: Wireless Doorbell Material: ABS Receiver Sensing Angle: 120 Degrees Receiver Sensing Distance: 0 - 3 Meters / 0 - 9.8ft Voltage: DC 5V Operating Frequency: 433 MHz Volume: 25 - 100 Decibels Music: 58 Melodies Waterproof Grade: IP55 Operating Distance: 200m / 656.2ft in Open Area Doorbell Battery: 1 x 240 mAh CR2032 Button Battery with Built in Battery for Delivery 1 x Receiver 1 x Doorbell 1 x USB Power Cord 2 x Screws 2 x Expansion Screw 2 x Adhesive Stickers 1 x English Instructions