This is a wireless vibration security alarm triggered by vibration and is suitable for bikes, motorcycles, vehicles, doors, and windows. it detects vibrations and & makes a loud alarm. it comes with a wireless remote control to arm or disarm the alarm system. it is really good for homes, offices, shops, cars or anything you wish to protect and will keep off thieves, intruders or trespassers. it has 3 alarm modes—the 1st alarm mode makes a noise each time it detects vibration on the door or window—the 2nd alarm mode makes a warning noise on the first vibration detection then a nonstop noise until the alarm is disabled by the remote—the 3rd alarm mode immediately turns on alarm noise when pressed. view my phone number to call or whatsapp me.