TEMPERATURE CONTROLLER IR33B7HR20

Product Description

The IR33B7HR20 is a CAREL IR33 series universal digital temperature controller used in refrigeration, HVAC, and industrial cooling systems. It is designed for precise temperature control with flexible inputs and advanced output options, commonly used in supermarket display cases, cold rooms, and chillers.

Key Features

• Universal IR33 series electronic temperature controller
• 1 relay output + 1 analog output (0–10V)
• Supports NTC / PTC / PT1000 temperature sensors
• Designed for refrigeration and HVAC automation
• Integrated buzzer for alarm indication
• IR sensor support (remote control option)
• Front panel keypad programming
• Suitable for DIN rail or panel mounting (model-dependent version)
• High-accuracy temperature regulation with programmable logic
• Alarm and protection functions (probe fault, high/low temp)

Specifications

• Product Type: Digital Temperature Controller
• Model: IR33B7HR20
• Series: CAREL IR33 Universal
• Supply Voltage: 115–230V AC
• Inputs: 2 temperature probe inputs (NTC / PTC / PT1000)
• Outputs:
– 1 relay output (compressor/control load)
– 1 analog output (0–10V control signal)
• Control Type: ON/OFF and advanced control logic (depending on configuration)
• Display: 3-digit LED display
• Operating Temperature: approx. -10°C to +60°C
• Temperature Range: depends on probe, typically -50°C to +150°C
• Mounting: Panel or DIN rail (IR33 format family)
• Protection: Front IP65 (installed panel front)
• Communication: Optional modules (e.g., RS485 Modbus via add-on)