Features: Vibration-triggered alarm for bicycles, motorcycles, doors or windows 7-level adjustable sensitivity, from light touch to push or beating 113dB loud alarm to deter thieves effectively 6 kinds of bells, IP55 waterproof PC material case, easy to find you Vehicle installation by sticking double side stickers or straps Specifications: Alarm requires 3 AAA alkaline batteries (not included) for standby 6-10 months Remote requires 12V/27A alkaline batteries (included) standby for more than 1 year Wireless range: 10-20 meters Working environment temperature: -20~60 degrees Working environment: Storage temperature: -30~70 degreesFunction: induction vibration host alarm, remote control wireless control, 3 kinds of car search ringtones, dumping SOS promptPrinciple: Vibration sensor senses vibrationFrequency: Wireless 433 frequencyBattery: three AA batteries for the host (normal 3~4 months battery life), one remote control 12V27A (more than one year)Ships with battery by default (removable battery)Wireless remote control distance: 10~25 meters, open 80~100 metersAlarm sound: 113dBHost waterproof grade: IP65Product use range: bicycles, electric vehicles, motorcycles, household doors and windows and other induction vibration trigger alarm alarm anti-theftDelivery Quantity: 1 PiecePackage Contents: Only the above package contents, excluding other products.Size: 9.5*4.2cm(Reminder: The size is measured by hand, please allow 1-2 cm measurement error)Colour: Black(Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.)