MechOptix Stoptix Frequently Asked Questions

Frequently Asked Questions (FAQs)
Stoptix Bicycle Brake Light
Part Number BBL-01

What happens when I apply the brakes?

The automatic brake light illuminates on measured deceleration. It measures your rate of
slowing down (deceleration) by measuring the g-force using an accelerometer very similar to
the one used in smart phones and tablets. The automatic brake light feature works in every
mode of operation and cannot be de-activated.

How do I turn it on and operate it?

Important! Charge the unit before first use.
The remaining battery life indicator will not be accurate until the unit is fully charged.
Mode 1 Mode 2 Mode 3 Mode 4
The automatic brake light feature works in all modes and cannot be de-activated.
Power On: Press button and hold for 2 seconds. Unit will power up when button is released.
Green LED will flash 5 times when the battery is fully charged. A flash count less than 5
indicates a partial charge (e.g. 3 flashes will be approximately 6 ½ hours operation in flash
mode).
Mode Select: Press button for 1 second or less to select the next mode (Mode 1 is default).
Note: Holding the button down for 2 seconds or longer will power down the unit. Modes
repeat after Mode 4.
Power Off: Press button and hold down until green LED flashes rapidly then release the button.
Charging: Green LED flashes slowly while charging. Green LED will stay on and stop flashing
when charge is complete. Unit has built-in overcharge protection. Full charge could take up to
3.5 hours.
The Operating Instructions are included inside the product packaging.
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