Practical wireless remote control with an effective range of 30 metres; red button activates, grey button cancels. Super loud and durable alarm: once set, the burglar alarm emits a long, strong beep and vibrates for 20 seconds to attract attention and deter thieves. Easy to install: includes all necessary accessories; compact size makes it ideal for bicycles, motorcycles, scooters and more. High sensitive alarm: detects the slightest movement from more than 10 metres away with an effective range of 30 metres from the bike; quick response and maximum safety. Use scenarios: - Parked bike in city streets, campuses or parking lots: arm with the remote; if movement is detected within range, the alarm triggers a loud beep and vibration for 20 seconds. - Motorcycle or scooter in a garage or lot: keep armed while away to deter theft; use the remote to cancel when returning. - During short stops on a ride: arm the system before leaving the bike unattended, then press cancel to disable upon return.