Does the HM70R feature a lockout function?Updated 3 years ago

Yes, the HM70R does have a lockout feature.

When the headlamp is off, you can activate the lock by pressing and holding the switch for 3 seconds. The red light will blink 3 times to confirm it has been locked.

You can deactivate the lock using the same method. The red light will blink 3 times and then stay on.

When the lock is active, pressing the button will result in 3 blinks of the red light.