Features: Highly Responsive Detection: Features advanced touch-sensitive technology, quickly activating upon detecting human movement, ensuring rapid home security. Easy to Carry: It’s convenient for use indoors or while traveling, providing security wherever you are. Discreet Notification Mode: Includes a discreet notification feature ideal for night use, effectively deterring intruders without disturbing household occupants or nearby people. Easy Setups: No tools required for setups; simply attach to a door handle for immediate use, making home security straightforward and efficient. All-Inclusive Security: Combines human detection, door handle contact, and touch notification features for effective theft prevention and property protective. Specifications: Size: Approx.101x55x26mm Color: Black Component: abs Battery: 9v battery (not included) Package Includes: 1pcs Touch Identification Safety Alarm note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.