Simply remove your old sensor and replace it with a pre-calibrated one. No need to send your breathalyser away for servicing anymore.
To suit both AlcoLimit Enforcer 2 and AlcoLimit Enforcer 3 Breathalysers.
Before ordering remove the battery cover and please check whether your internal circuit board is GREEN not RED as they are not cross compatible.
If it's green you will see the green circuit board and have a mini connector at the base. If it's red you will see a rectangle hole instead of the mini connector.
Contact us if you are unsure.