eoocvt V4 Bestlap Lap Timer Infrared Ultrared Racing Track Professional Receiver Beacon Transmitter Stopwatch for Car Karting

الوصف

We deeply know what kind of lap counter device the riders needs: Professional, Powerful, Easy for use, Looks cool. Size：80x50.5x14.9mm Power: 3.6V Li LIR2450 battery Capacity:110mAh, charging time: 30 min., Working time: Minimum 30 hours FAQ: 1. What happened if the timing is not accurate? When the battery is very low, RTC(real time clock) will stop working, and the device will not run normally. Recharge it and it will work again. 2. How to download records to computer? Turn off your timer, and connect to PC with USB cord;Turn on your timer, and your PC will recognize it as a FlashDisk. Work on your timer like a flashdisk. 3. Why USD does not work? Charge the battery for a while and try again later; 4. How to change the minimum time interval, for example, 1 sec. 5 sec. 10 sec. The default time interval is 10 seconds, which means your each lap timer must be longer than 10 seconds. To change the minimum time interval, press the T and enter the clock mode, then press S for 6 seconds, see the LED flash, and you will see the new interval, 10 -> 1 ->5 ->10; 5. How to delete old records? In clock mode or history review mode, press the O button 6 seconds, the memory will be formatted, you will see LED flashing during this time; 6. Why the LED does not light up during recharge; Yes the LED won’t light up during recharge unless the power is switched on. It is normal. because the device is completely power off when switch is OFF. ALWAYS turn off the device before you stop recharge and unplug the USB.