1、Efficient Infrared Motion Sensing: With precise motion sensing capabilities, the door bell ensures real time monitoring of visitors, ensuring that you never miss any guests or customers. 2、Split Design: The main unit and the language broadcasting alarm are installed separately, offering higher flexibility and convenience for installation and maintenance purposes. 3、Multi Language Broadcasting: The welcome door bell provides multiple language broadcasting options, making it convenient for customers of different nationalities to use and understand. 4、Reliable Alarm System: With a loud and clear alarm sound, the motion sensor alarm alerts you promptly when visitors arrive, ensuring the safety and security of your store or premises. 5、Perfect for Welcoming Customers: Specifically designed for supermarkets, shops, and other commercial areas, the door bell creates a welcoming atmosphere. Item Type: Door Entry Alert Material: ABS Battery Type: Lithium Battery, Battery Type: 1.5VAAA x 3 Receiver Operating Current: ≤60mA, Quiescent Current: ≤7mA; Power: ≦2W; Music: 36 Chords Music Can Be Selected; Operating Frequency: 433MHZ; Remote Control, Reception Distance: Approx. 200-300m / 656-984ft (Open Area); Transmitter Working Frequency: 433MHZ; (transmitter not included battery) Transmitter Working Current: ≦12mA LED Indicator: The transmitter senses the person, the LED indicator of the transmitter lights up, the transmitter works, at the same time, the receiver receives the instruction, it also sends out the melodious music, reminding you that there is a VIP visit, and at the same time, the LED light on the receiver also flashes regularly along with the music; Temperature Resistance: -10℃-50℃ 1 x Transmitter 2 x Receiver 1 x Connector 1 x Base 2 x Screws 2 x Expansion Screws 1 x English Manual