SPECIFICATIONS Alarm Type: The Alarm Arming Type: FR Remote-controller Brand Name: Elecpow Certification: CE,FCC,RoHS Connection Type: Wireless Hign-concerned Chemical: None Origin: Mainland China Power (W): USB-C Charging Smart home platform: None Kind reminder: This product will be shipped from warehouses in the United States or Spain, and we will provide a fast shipping channel Reminder: 1.This product will be shipped from warehouses in the United States or Spain, and we will provide a fast shipping channel 2. Before the first use, please charge it first, and then it can be used normally after activation. 3.One host can be equipped with three remote controls, and one remote control can also control two hosts. 4.If the taillight bracket is broken, you can contact us, we will send you a new bracket for free. 5.If you encounter any product and logistics problems, please leave us a message in time and we will reply as soon as possible. This anti-theft alarm triggered by vibration, with a loud alarm sound of 110 dB, helps to effectively stop thieves, provides additional security and allows you to concentrate when parking at home or outdoors. This alarm can effectively prevent anyone who tries to break into or steal your bicycle, electric bicycle or motorcycle. It has seven levels and the sensitivity is adjustable from high to low. And 3-level adjustable volume up to 110 dB. Product Features: USB-C rechargeable Arm and disarm by remote Strong remote range up to 164ft~229ft 3 Installation methods 7 Levels adjustable sensitivity 3 Levels adjustable volume Vehicle search function 3 Different ringtones for vehicle search function (Invalid in ARM mode) Low battery indicator (If alarm is low battery, it will make low-battery prompt sounds when you press arm/disarm button) IP54 Waterproof Specifications? Alarm noise level: 110dB Waterproof grade: IP54 Remote range: up to 164 feet (up to 229 feet outdoors) Alarm battery: 4.2V 700mah lithium battery (including) Remote control battery: 27a (12V) alkaline battery (including) Rechargeability: alarm battery only (USB C rechargeable) Alarm working time: about 1 ~ 3 months. The standby time is about 6 months Remote working time: 1 ~ 2 years (5 times a day) Operating frequency: 433.92mhz Working temperature: - 40 ~ + 70 ?, storage temperature: - 40 ~ + 70 ? Working humidity: 80% Notice?1?Before the first use, please charge it once to activate it before normal use. It is recommended to use it again when it is fully charged. Use the supporting USB charging cable and connect the mobile phone 5-volt charging head (not included). Some fast charging heads are incompatible. PC + UV resistant material, IP54 waterproof and dustproof, high and low temperature resistance, not afraid of wind and rain, cold and heat. The remote controller can remotely control the alarm, and the maximum distance must be kept within 20 meters. Bracket, tie, double-sided tape, 3 installation methods without wiring, suitable for various models! If the sensitivity is adjusted, press the [Defense] key continuously to adjust the seven level sensitivity from high to low. If the volume is adjusted, press the [horn] key continuously to adjust the third gear volume from high to low. Alarms can be installed in many places. Bicycles, motorcycles, cars, etc...