PAVEOS CACAZI Home Security Wireless Smart Doorbell LED light 58 Songs US Features: 58 ringtones to choose from and 4-step volume control Eye-catching backlight flashes when someone pushes the doorbell. Particularly suitable for the elderly, deaf, and pregnant women The same frequency and different learning technology is used between the digital doorbell transmitter and the receiver to avoid external interference The transmitter is and and meets the Ip44 standard. It can be simply installed Specification: Name: CACAZI Power: Supply Itercom: No Item Type: Wireless Doorbell Display: None Alarm: No Communication Interface: Wireless Power Source: AC,Battery Power supply: 110V-220V Ring tone: 58 ring tones Waterproof: yes Battery mode: 12v 23A battery Receiving distance: 300M Remote (in open area) Use of premises: Home office villa school factory Package Included: 1 X Receiver 1 X Emitter 1 X Manual 1 X Screw Package 1 X Battery 1 X Househeld supplies for adult and children Design: Our smart household appliances adopts a close-to-life design, just to achieve a satisfying experience for you. Durability: This smart household appliances is made of sturdy and durable materials, which can maintain its functionality even after frequent use. Multipurpose: This smart household appliances can provide convenience for your daily life, whether it is for daily work or home leisure, you can also give it to your husband/wife/family, they will love it!