What's the best programmable thermostat with password that cannot be reset by removing power?

I am looking for a tenant proof residential thermostat that has password protect which cannot be reset by someone removing the batteries or disconnecting the power wire and reconnecting it. IS there a thermostat that is not too expensive that has that sort of static memory, similar to a memory stick, that does not need constant power?

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  • 8 years ago
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    Source(s): maint man
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