This electronic security system with remote control can help your motorcycle stay away from thieves. Use high-power, high-definition alarm speakers that scare off thieves and alert you in time. Why not take it home with such a practical product? Product Parameters: 1. Rated working voltage: 12V 2. Quiescent current: 3.5mA 3. Transmission and reception frequency: 315MHZ 4. Remote effective distance: 150 meters 5. Alarm sound level: 125dB 6. Operating temperature range: -15 C -80 C 7. Product weight: about 0.243kg 8. Size: about 15.8*6.5*9cm/6.22*2.56*3.54in 9. Material: plastic Instruction: 1. Lock button: Set the anti-theft function. After three seconds, the host will pass the vibration alarm. 2. Unlock the key: Improve safety. 3. Ringtone button: Look for the car, click the button, the speaker will ring, if the car stops in the parking lot, you will know the approximate location. You can also ask for help when you are in trouble. Product List: 1*High power siren (125dB) 1*Brain module system built-in shock sensor 2*Remote controls 1*Sticker hello, guys, thank you for visiting my store.if you want buy more than we listed,