SPECIFICATIONS Alarm Type: The Alarm Arming Type: FR Remote-controller Brand Name: WSDCAM Certification: CE Connection Type: Wireless Display: No Hign-concerned Chemical: None Model Number: Bicycle Taillight Origin: Mainland China Password Keyboard: No Power (W): 700mAh lithium battery Size: 8.6*8.1*6.5CM Smart home platform: Tuya Video Interface: Yes NOTICE: The horn need to be paired with the alarm by yourself, first:long press the button of the alarm power,until you sound a BI,then release your hand,and press the button of the horn ,pair successfully Product Parameter: 1 .Alarm Battery : 4.2V 700mAh lithium battery, working time about 1-3 months, standby time about 6 months. 2. Alarm Charge Port: Standard USB-C 5V (some quick chargers may not be compatible) 3. Remote Battery: WLO3C: 27A(12V) Alkaline battery, working time about 1-2 years (5 times per day) WLO9C: CR2032(3V) Button battery, working time about 2-4 years (5 tímes per day) 4. Working Frequency: 433.92MHz 5. Working Environment Temperature: -40 ~ +70? 6. Working Environment Humidity: 80% ,Storage Temperature: -40 ~ +70 ? Feature : ? Taillight/Brake light/Anti-theft alarm/Bike bell 4-in-1 function! ? Reminding the surrounding pedestrians and drivers with light and sound warning, effectively protect the safety of the car and the rider! ? Warning light will automatically light up when passing through a tunnel or during the night rides! ? Brake light will, be highlighted immediately when you brake or slow down! ? Arming when parking, deterring thieves and protect your car effectively by loud alarm sound and blink light! ? PC+ anti-UV material, waterproof and dustproof, high and low temperature resistance, not afraid of wind, rain and severe cold and heat! Smart Brake Sensing Light 4Flash Model? 1?Slow Flash 2?Breaching Frash 3?Blink Frash 4?Steady Flash USB-C Rechargeable? 700mAH li-polymer Battery, Full of electricity once, you can use 1-3 months, and the standby time can reach 6 months IPX5 waterproof and dustproof? PC+ anti-UV material, It can be used normally on rainy days, and effectively protects your safety Find a bicycle function: the remote control distance is 69TF, you can easily find your own car in a bunch of bicycles There are 7 sensitivity adjustable: and the maximum decibel can reach 110dB one alarm can pair up to 8 remotes Reminder: 1.If you are worried about not knowing how to use the product, you can contact us and we will send you the document of the product manual by email. You can copy the text and translate it into the language you want. 2. Before the first use, please charge it first, and then it can be used normally after activation. It is recommended to use it again after it is fully charged 3.One host can be equipped with 8PCS remote controls 4.If you encounter any product and logistics problems, please leave us a message in time and we will reply as soon as possible.