Portable, adopts ABS material, lightweight, rust-proof and durable. Whether you are traveling or going on a business trip, you can take it anywhere and anytime. Free yourself from every burden. Is your trip home necessary? 120 dB ultra loud alarm ringtone. turn it on and the loud alarm will scare away unwanted invaders, keeping you and your families safe. It can be a cycle of use. To stay in the hotel, you can install this alarm on the door and window, it will protect you when you leave, take it with you for the next use. Easy to use, just turn it on and hang it on the interior door handle without the need for special wires, safe and secure, smart, efficient and convenient operation. When you don't need to use the alarm, simply place the switch to "ON" and the alarm devices to standby. It can be widely used in your home, office or factory, hotel, etc. If you install the touch sensor in your home, office or factory, it will sound to alert when children open doors and windows or theft occurs. Number of shipments: 1 pcs ( without battery)