1 Set 12V Motorcycle Universal Anti-Theft Alarm System Scooter 125db Remote Car Key Case Engine Start Motorcycle Speaker -- Warm tips: Connected to motorcycle battery - 12V, red - positive, black - negative Function: Working voltage: DC 12 V Static current: 3.5 mA Alarm volume: about 125 dB Remote distance: MAX 80 meters in open space Remote frequency: 315MHz Instruction: 1. This electronic security system with remote control can help your motorcycle stay away from thieves2. Remote arm/disarm3. Remote, Engine Start: Keyless Entry4. Adjustable shock sensor, flashing lights warning 5.4 buttons remote transmitters, compact and powerful 125db piezo siren6. Intelligent Alarm that automatically recognizes vibration frequency7. Emergency Alarm: Anti-hijacking by cutting off power 8.Fit any motorcycle with 12V battery Package includes: 1 x Alarm Speaker (125dB) 1 x Built-in Brain Module System Shock Sensor 1 x 2pcs Remote Control 1 x English Installation Manual