Name: IR33Z7LR20 Temperature Controller
SKU: IR33Z7LR20
Availability: InStock

Overview

This IR33Z7LR20 is a compact, panel-mount universal electronic controller designed for precise temperature regulation in refrigeration, HVAC, and light industrial applications. Supporting multiple temperature sensor inputs (NTC/PTC/PT1000), it operates on a wide voltage range of 12–24VAC and 12–30VDC, offering reliable control for compressors, defrost cycles, fans, and auxiliary functions. Its integrated buzzer and LED display enable clear status monitoring and audible alarms, making it ideal for standalone cooling and heating systems requiring high flexibility and stability.

Key Features

Multi-Sensor Compatibility: Supports NTC, PTC, and PT1000 temperature sensors for versatile input configurations.
Wide Power Supply: Works with 12–24VAC and 12–30VDC, adapting to diverse power environments.
4 Relay Outputs: Enables independent control of compressors, defrost, fans, and auxiliary loads.
Integrated Buzzer: Provides audible alarms for faults, high/low temperature thresholds, and system alerts.
Compact Panel Design: 76.2 × 34.2mm form factor, suitable for standard DIN rail or panel mounting.
Certified Safety: Compliant with UL, EN, and CE standards for industrial and commercial use.
Extended Temperature Range: Supports operation from -50°C to +150°C (depending on sensor type).

IR33Z7LR20 HVAC display panel technical specifications table

Parameter	Specification
Model	IR33Z7LR20
Compatibility	Universal Refrigeration Temperature Controller
Working Voltage	12–24VAC / 12–30VDC
Operating Temperature	-50°C ~ +150°C (Sensor-Dependent)
Mounting	Panel Mount
Product Length	74.93 mm (2.95 inches)
Product Width	73.66 mm (2.9 inches)
Product Height	34.29 mm (1.35 inches)
Product Weight	0.104 kg (0.23 lbs)
Country of Origin	China
HS code	9032.89.6085
Shipping Length	121.92 mm (4.8 inches)
Shipping Width	121.92 mm (4.8 inches)
Shipping Height	66.04 mm (2.6 inches)

Same Series Display Models

IR33V7LR20

IR33W7LR20

IR33A7LR20

IR33D7LR20

IR33Z7LR20

IR33Z7HB20

IR33Z7HR20

IR33Z9HR20

IR33C0LB00

IR33C7LN00

IR33C7LR00

IR33C7LN01

IR33A7HR20

IR33Z9MR20

Previous compatible models

NTC030WP01

NTC060WP01

NTC1000WP01

NTC150WP01

ASWT030000

IROPZKEY00

IROPZDIS00

IR32Z00000

DN33Z7LR20

EVD0000T50

Same series function expansion models

NTC030WP00

NTC060WP00

NTC1000WP01

NTC150WP01

ASWT030000

IROPZKEY00

IROPZKEYA0

IROPZ48500

IROPZ485S0

IROPZSER30

IROPZDIS00

SPKT0041C0

SPKT00B1C0

Application Scope

This controller is widely applied in commercial refrigeration units such as display cases, cold rooms and freezers, HVAC and air conditioning systems, light industrial process cooling and heating equipment, beverage and food service machines, as well as environmental control systems for storage facilities, delivering reliable temperature regulation across diverse commercial and industrial scenarios.

Packaging & Shipping

Neutral safe packaging, shockproof and drop-proof protection
Global shipping via DHL, UPS, FedEx and sea freight options
In stock support for fast delivery
Wholesale, retail and mixed order are acceptable

Our Service

We provide full series of refrigeration and HVAC spare parts, including control display panels, temperature controllers, sensors, power modules and industrial electrical accessories.

For technical parameters, dimension drawing, cross reference model or bulk discount, please feel free to contact us. Cick Contact us.To consult HVAC standard pls click HVAC standard.