Smart Wireless Doorbell Plug & Play Door Bell Kit Plug-in Receiver Waterproof

Features:

a Fit for home, apartment, classroom, office, villas and more. a User friendly design, especially suitable for the elderly. a It can be a paging device for the elderly, can signal for care when they need it most. a With 36 music and 4 volume, meet your favorite music style, and volume requirements. a Operating scope up to 300m in open area ensures you to hear the bell and answer the door in time.
Specifications:

Type: Smart Wireless Doorbell Material: ABS Color: White Frequency: 433.92MHz ± 75KHz Ringtone QTY: 36 Volume: 4 Level Adjustable Volume DB: 0-100dB Waterproof: IP44 Working Temp: -30 ~ +70a / -22 ~ +158a Outdoor Unit: 1x 12V 23A Battery (NOT included) Receiving Distance: 300M / 984FT Outdoor Unit: 48 x 20 x 78 mm / 1.89 x 0.79 x 3.07 in Indoor Unit: 62 x 23 x 106 mm / 2.44 x 0.91 x 4.17 in Indoor Unit: US Plug (We will send you a local adapter plug for using) Voltage: AC 110-220V 50/60Hz (Pls make sure it is suitable for your local voltage standard)
Installation:
a There are two ways to fix the transmitter: tape and screw. It is recommended to use the tape. a Easily plug receiver into an electrical outlet (no batteries required for main receiver). a Install just plug it in location you need it to be heard, then you put the button where you want someone to push the button.
Package Included:

1 x Indoor Unit (Plug-in Receiver) 1 x Outdoor Unit (Transmitter) 1 x Double-Sided Adhesive Tape 1 x Screwdriver 1 x Screw Kit (battery and other decorations NOT included)
Details Pictures: