SZ-7529 Series | Freezer Temperature Controller with 20A Relay & OFF Cycle Defrost

Product Summary

The SZ-7529 Series Temperature Controllers are high-performance solutions for commercial refrigeration applications. With a robust 20(14)A relay, OFF cycle defrost functionality, and NTC probe input, they provide precise temperature management. Available in two variants—SZ-7529T (touch keypad) and SZ-7529P (standard keypad)—the series is designed for efficiency, safety, and durability.

Key Features

• 20(14)A Relay Output for compressor control

• OFF Cycle Defrost with time-based configuration

• Auto/Manual Defrost Option for flexibility

• Temperature Range: -45°C to 99°C, Resolution: 1°C

• NTC Probe Input for accurate sensing

• SZ-7529T Exclusive Features: Touch keypad, password protection, compressor ON/OFF delay, and high/low temperature logs

• Display: Large 7-segment LED (17mm or 14.2mm depending on model)

• Panel Mount Housing with 71 x 29 mm cutout

• Auto Operation in Sensor Error Mode

Applications

• Freezers

• Chest Freezers

• Pizza Counters

• Other commercial refrigeration appliances requiring 20A relay capacity

Product Benefits

• Enhanced compressor safety with ON/OFF delay (SZ-7529T)

• Prevents equipment damage with auto sensor error operation

• Easy to use with touch-sensitive or standard keypad options

• Reliable long-term operation with password protection & logs (SZ-7529T)

• Flexible installation with compact panel-mount housing

FAQ

Q1: What is the main difference between SZ-7529T and SZ-7529P?
A1: SZ-7529T has a touch keypad, password protection, compressor delay, and temperature logs, while SZ-7529P is a standard keypad version without these extras.

Q2: Can I use this controller for commercial freezers?
A2: Yes, it is suitable for freezers, chest freezers, and pizza counters.

Q3: What type of sensor does it support?
A3: It supports NTC temperature sensors.

Q4: What is the relay capacity?
A4: The controller provides a powerful 20(14)A relay output.

Q5: Does it work if the sensor fails?
A5: Yes, it has an auto operation mode for sensor failure scenarios.