Choice of 2 operating modes: LED flash only or ringing and LED flash. The channel detector has 3 volume controls: high, medium, and low. There are 38 ringtones to choose from. The receiver has an effective range of up to 70 meters. The sensor has a detection range of 3-7 meters. Can be successfully used in homes, offices, shops, hotels, and other buildings. Ideal for alerting business owners working in the background or out of sight when customers enter the store. Can also be used as a signal for your pet to enter or exit. Applications: Driveway alarm, burglar alarm, drive-through alarm, pest detector, car alarm (indoor), warehouse monitoring, meter cabinet alarm, monitoring of garages and storage rooms, mailbox sensor, detection of entrance doors or sidewalks. Package includes: an electronic plug-in receiver, a PIR motion sensor (powered by 3 AAA batteries, NOT INCLUDED). Buy our products and benefit from 30 days of worry-free after-sales service! If there is a quality problem with the product you received, do not hesitate to contact us. We will return or exchange the item free of charge. This ensures that you receive a flawless product. If you have any questions about the use of the product, do not hesitate to contact us. We will provide you with relevant answers so that you can make your purchases with peace of mind.