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August 31, 2026 4 min read
User's guide for the HAI (Home Automation, Inc.) RC-1000 and RC-2000 Omnistat2 programmable communicating thermostat — covering controls, display, scheduling, and humidity settings (RC-2000).
User's guide for the HAI (Home Automation, Inc.) RC-1000 and RC-2000 Omnistat2 programmable communicating thermostat — covering controls, display, scheduling, and humidity settings (RC-2000).
The Omnistat2 is a precision digital thermostat controllable both locally and remotely, offering stand-alone operation, programmability, and communication with automation systems, utility control systems, and personal computers.
Shows: current indoor temperature, cool setting, heat setting, thermostat mode (Off/Heat/Cool/Auto/EM Heat), status indicators (1st/2nd stage heat/cool running), message bar (date/time, outdoor status, filter reminder, energy status/messages), hold setting, fan setting, relative humidity (RC-2000 only), and period indicator (Morn/Day/Eve/Night).
The thermostat logs heating/cooling runtime and displays "Change Filter" on the Message Bar when it's time to replace your filter. Press the Scroll Wheel twice to clear the reminder — don't forget to actually change the filter!
Shows: current indoor temperature, thermostat mode (Heat/Cool, blank if Off), temperature setting for current mode (blank if Off), status indicators, and current time.
Turn the Scroll Wheel to display the Temperature Settings Page (adjusts the current mode's setting first). Press [Heat] or [Cool] to switch which setting you're adjusting. Press the Scroll Wheel or [Ok] when complete.
Press [MODE] to display the Mode Setting Page. Turn the Scroll Wheel to scroll through modes; press Scroll Wheel or [Select] to confirm; press [Cancel] to discard.
Press [FAN] to open the Fan Setting Page.
Press [HOLD] to open the Hold Setting Page. In Hold mode, the thermostat won't change desired settings via program schedule or remote system.
Press and hold [MODE] for 5 seconds. Turn the Scroll Wheel to set: hour, minutes, AM/PM, month, day, year — pressing Scroll Wheel or [Next] between each. Press [Ok] to save, or [Cancel] to discard.
The thermostat comes preprogrammed with energy-saving settings. It can be programmed with up to 4 temperature changes per day, with different times/settings for every day of the week. A single day's schedule can be copied to other days (useful for matching weekday schedules).
The 4 daily periods:
To modify: press the Scroll Wheel to open the Main Menu, select "Program," choose a day of the week, then adjust each period's start time (in 15-minute increments — to disable a period, set it and the next period to the same time), heat setting, and cool setting. Press [Ok] to save for that day, or [Copy] to save and copy the schedule to other selected days of the week. Press [Cancel] at any point to discard changes.
Press the Scroll Wheel to open the Main Menu, highlight "Humidity," press Scroll Wheel or [Select]. Turn the Scroll Wheel to adjust the humidify/dehumidify setpoints; press Scroll Wheel or [Next] to switch between them. Press [Ok] then [Back] to save and return home, or [Cancel] twice to discard.
From the Main Menu, select "Runtime Graph" to view a bar graph of air conditioning and heating system runtime hours for the current week and the previous three weeks (Weeks 0-3).
This thermostat has been tested and found to comply with EU requirements for Electromagnetic Interference, Electromagnetic Immunity, and Safety under applicable EMI and Low Voltage Directives, as well as FCC Part 15 Class B digital device limits. It generates and can radiate radio frequency energy but is unlikely to interfere with radio/TV due to its low-power design; if interference is suspected, try reorienting the receiver's antenna, moving the receiver away from the product, or consulting an experienced technician.
HAI (Home Automation, Inc.) — New Orleans, LA, USA. A complete Omnistat2 Owner's Manual is available for download at the manufacturer's website.
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