The Honeywell H1008A1008 humidistat provide 24 volt control of central humidification systems. This system uses Humidcalc software built into the unit to estimate outdoor air temperature based on your system's run time. The H1008 includes a system status light and an outdoor sensor is available as an accessory.
This part is obsolete, and has been replaced by Honeywell part number DG115EZiAQ. Please contact ESC at 1-800-360-3324 for more information.