microSTEP and microSTEP 500 SA

These items are no longer available, but you may still order accessories and spare parts and replace contactor panels.



Imagine a controller that offers simple, flexible climate management and excellent results. With the STEP Up you’ll see improved performance and increased profits. Like traditional staged controls, it’s simple to use, and we’ve added a brighter LCD screen and an upgraded user interface, both designed to improve your experience.


  • 6 stages: 2 heating and 4 cooling
    • Easily adjust the temperature for each stage
  • 3 setpoint temperature periods – day, night and DIF; auto adjusts based on sunrise and sunset
  • 2 modulating outputs control up to 2 vents or 1 vent and 1 curtain
  • 1 analog output (0 to 10VDC or 4-20 milliamps) to control variable-speed fans and modulating valves
  • Cycle timer
  • Alarm output
  • Password protection
  • Easy to use push button interface
  • Large menu-driven screen displays current temperature, time, date, grow weeks, equipment status, etc.
  • Records the temperature in 15-minute increments and stores it for 7 days
  • Includes logs and graphs data
  • Logs high, low and average temperatures
  • Timed override switches in addition to the manual over ride toggle switches
  • Stores settings in the event of a power failure
  • Optional humidity sensor
  • Durable corrosion-resistant cabinet: 9.5” x 6.25” x 3.75” (241 x 159 x 95 mm)
  • Removable terminal blocks for easier wiring
  • Requires STEP Up on Contactor Panel, sold separately

Download Brochure