Pros, Join Our TradeMaster Program!
The RS300P Premier Programmable series of thermostats from Robertshaw are designed for new and replacement commercial or residential applications. The RS300P family has a beautiful new blue backlight and secondary display for the remote sensor bus. The RS300P family thermostats are direct replacements for the Robertshaw 300 series programmable products. They can be configured to control conventional HVAC equipment or heat pump equipment with both traditional and dual fuel heat pumps. The pushbuttons on the thermostat can be locked to give restricted override capabilities, and the optional Occupancy Sensor enables automatic energy savings. The advanced remote sensor bus allows up to 6 indoor remote sensors, an outdoor sensor, and up to 3 auxiliary sensors for needs such as supply air, return air, water temperature, walk-in freezers and refrigerators, and any other temperature monitoring desired.

  • 7-Day Programmable, 5-2 Day Programmable or Manual Operation
  • Auto Heat/Cool Changeover, Heating Only or Cooling Only Control
  • Intuitive Setup Menu for Easy Configuration of Options
  • Fan Selector for Automatic, Continuous or Recirculation Fan Operation
  • Adjustable Fan Purge Timer to Use All Conditioned Air at the End of a Heating or Cooling Call
  • Adjustable Min/Max Heating and Cooling Setpoint Limits
  • Room Sensor and Remote Sensor Calibration Offset
  • Commercial Lockout Mode with adjustable 0 to 24 Hour Override in 10min Increments
  • Resume Button for Cancelling Commercial Override
  • +/- 3°F (1°C) or +/-5°F (2°C) Restricted Temperature Adjustment in Commercial Lockout Mode
  • 2 Occupied (Day-Cool & Day-Heat) and 2 Unoccupied (Night-Cool & Night-Heat) Setpoints
  • Adjustable Balance Points for Heat Pump Compressor and Aux Heat Lockout when Used with Outdoor Sensor
  • Selectable Fahrenheit or Celsius Display
  • Lockable Access Cover
  • HVAC equipment control using dry contact relays
  • Two Digital Inputs with LEDs: LED1 (Green - Filter) and LED2 (Yellow – Fault) with or without LCD icon indications
  • LED3 (Red - Emergency Heat; HP Operation Only)
  • Setback Input for Use as Occupied/Unoccupied Trigger with Optional Occupancy Sensors (Ceiling and Wall Mount)
  • Advanced Remote Sensor Bus Sensors allow up to 6 Indoor, plus Outdoor, Aux1, Aux2, and Aux3 (think supply air, return air... all on a 3-wire bus
  • Random Restart on power up randomly staggers restart of HVAC system after a power outage to minimize peak in-rush current for any installation
Read more
Multi-Stage (Heat/Cool)
2 Heat/1 Cool
7 Day
User Interface:
Push Button
Works with Sensor
Large Display
Auto Changeover
Fan Control
Low voltage
Height (Inches):
Width (Inches):
Depth (Inches):
Speak with a real person who will go out of their way to help!
Closed Now: Phone Hours
Monday – Thursday
8am–7:45pm ET
9am–7:45pm ET

1 Product Reviews

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.