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5 ModesDoorbell Door Chime: Not only serves as a Doorbell Door Chime detect alert but also have more other functions.Welcome / Doorbell / Alarm / Color light / Lighting Model. Motion detectors are essential in a home security system. It can detect movement in the surrounding areas - driveways, front porch, gates, home, sheds, offices, walkways, swimming pools, stores,etc. And trigger alert to the linked receiver. It provides an added level of security and safety to your property and loved ones. 5 Languages/36 Ringtones / 4 Brightness and Color / 4 Level Volume Adjustable:、 5 welcome languages selectable in welcome mode.36 ringtones selectable in doorbell mode.welcome/doorbell/Alarm model has 4 level volume adjustable. Color light/ Lighting mode is silent and has 4 levels brightness adjustable, great for people with hearing disabilities or there is sleeping baby in your house. The color light model also has 4 colors selectable. Sensitive & Wide Wireless Range:The motion sensor alarm catches movement from a broad scope of space, with a Working Range up to 280m/918ft between the receiver and motion sensor. detection range of the infrared sensor approximately 4-8m/13-26ft to keep you informed and safe. You can put the motion sensor detector at the porch, gallery, mailbox and put the receiver in your house. Expandable Wireless Home Security Flexible design according to your actual needs. You can choose the quantity of transmitter and receiver as you like, which can be freely matched and set special lights or ringtons with each other.Each receiver of this motion sensor detect alarm can work with 32 motion sensors and 8 remote at most. Easy to Install & Use: The device can be charged by micro USB or installing with batteries（infrared sensor need three AAA batteries and receiver need three AA batteries)to make it work.Both the infrared sensor and the receiver have a mounting base. The infrared sensor can be rotated 360 degrees from left to right and 180 degrees from top to bottom.So easy to install and can rotate to any position you need. Specification Power Supply (Receiver): Micro USB or AAA alkaline battery x 3 (not included) Battery lifespan: 5-7 months (based on 30 minutes per day) Volume: up to 113dB Operating range: 280m/918ft Working frequency: 433.92MHz Remote Control Size: 2.36x1.57x0.79inch Magnetic Transmitter: Low battery indication Package List:1 x Door Alarm Receiver, 1 x Instruction Manual,1 x Desktop base,1 x Infrared Curtain Transmitter,1 x Bag of Mounting Screws