The DN33Z9MR20 is a versatile electronic controller from Carel, part of the DN33 series, designed for managing temperature, humidity, and pressure in HVAC and refrigeration systems. Here's a full breakdown of its capabilities:

Key Features

• Control Type: ON/OFF or PID (depending on configuration)
• Inputs:
  • Universal: supports NTC, Pt100, Pt1000, PTC, TC J/K, and analog signals like 0–10 VDC, 4–20 mA
• Outputs:
  • 4 relay outputs for controlling external devices
• Power Supply:
  • Operates on 24 VAC or 30 VDC
• Display:
  • 3-digit LED with decimal point and sign
• Mounting:
  • DIN rail or panel mount
• Protection Rating:
  • IP65 (front panel), suitable for industrial environments