PAVEOS The Doorbell Sensor Can Record The Ding-dong Voice Reminder At The Supermarket Entrance And The Store Welcome Doorbell Alarm Features: One click recording is easy. No more changing banners on your computer, built-in memory for recording multiple voices. Infrared sensor for day and night. Welcome guests during the day and keep out thieves at night. 15 built-in voices can be switched at will, and the 4- volume adjustment is even more considerate. This product is mainly used in supermarkets, restaurants, clothing shops, convenience stores, pharmacies, flower shops and so on. It is easy to install and use and is fully functional. The buttons have icons on them for quick differentiation. Product Description: Power supply voltage: 5 (V) Power consumption: 0.5 (W) Sensing range: 90° up and down, 120% left and right Sensing distance: 0~4 meters Sound pressure: 75db~95db±5db Package List： 1*Doorbell 1*sticker 1*Instruction Manual 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! Wide Selection: Discover an extensive range of household tools, from indoor to outdoor accessories, ensuring you find exactly what you need for your home . This smart household appliances will surely fulfill your needs! Service: If you encounter problems in the process of using smart household appliances, please feel free to contact us and we will solve them for you.