Easy, Reliable
and Affordable

The most discreet interlock available

Our smallest interlock handset with the most reliable technology. Easy blow pattern and simple screen. One of the best interlock devices available.

Mouthpiece

Blow into the device to register an effective test. No tricky inhale-exhale blow patterns to deal with.

Display

The straightforward display provides clear and easy to read instructions.

Navigation

Large, limited buttons make for intuitive operation.

LifeSafer L250 User Guide
View your complete user guide.

Easy, Reliable
and Affordable

A simple, reliable interlock unit

This interlock device is a simple, reliable interlock unit that fits comfortably and discreetly in the hand. Our quick guide makes it easy to understand the light patterns and get you blowing and going on your way quickly.

Mouthpiece

Blow into the device to register an effective test.

Display

Red and green lights quickly communicate at a glance blow, wait, abort, pass, warn or fail.

Navigation

No buttons!

LifeSafer FC100
Download your complete user guide.