All-In-One PRODUCT: Self-contained entrance alert with motion sensor and a built-in chime. Great product for smaller shops, stores and business offices, who wants a simple and effective heads-up when someone walks through a door or any monitored areas. If you prefer custom ringtones, check out our M6 PIR Custom Chime. MULTIFUNCTIONAL MODES: Voice/Alarm/Music mode, you could set the proper mode according to your need. Under Voice mode, it greets people with "Hello, welcome"; Alarm mode will sound alarm to alert you if it detects movements; Music mode provides 32 different options of ringtone, there is something for everyone. DETECTION RANGE: Picks up any type of movement within 2-6m to 110°Horizontal, 15°Vertical, a blind zone occurs when beyond of the angle range, so placement is the key to maximize its utility. Sensitive enough to notify you when people walk into you property. Unable to "see" through the glass/window to operate. VOLUME CONTROL: Up to 90dB alerts with 4 volume levels, and the LED light indicator flashes to give visual alerts. Never have to worry about missing a customer or knowing someone unexpected. PORTABLE & WALL MOUNT: Comes with a detachable bracket to stand on and allows it to swivel up and down so it can be positioned in the direction you like, and you can use it whenever you want; Apply the adhesive patch to affix the doorbell to your wall or use the provided screws to secure it in place. All the required accessories are included in the package for an effortless setup., Weight: 0.18298367746 Pounds, Manufacturer: KERUI