DEVI devireg 530 - 3. Neon light indications (LED)

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When installing a thermostat from Devireg™ 530 series, you
must first remove the front cover.
To remove the front cover, gently press the release tabs
under the bottom of the thermostat with a screwdriver. Then
remove the front.
You do not need to remove the set point dial.
4. Installation instructions