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Checkit Probes

Checkit Probes contain a replaceable CR123A 3v battery. To replace the battery, twist the end cap and replace it with a like-for-like battery.

ETI Probes

ETI probes contain a AAA replaceable battery.

If you see a flashing red LED or no LED when you open the probe, please replace the battery. To do so, use a Pozi screwdriver.

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