This humidity probe is compatible with the SpyderWeb series units and standard models that have version 5.0 firmware or greater.
All Herpstat 1 SpyderWebAll Herpstat 2 SpyderWebHerpstat 1 (firmware 5.0 or greater)Herpstat 2 (firmware 5.0 or greater)Herpstat 4 (firmware 5.0 or greater)Herpstat 6 (firmware 5.0 or greater)
Note: To check firmware version on unit unplug it for ten seconds and plug it back in. The unit will display the firmware version on startup.
Save$44
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