SZ-7510 Series | Digital Temperature Controller with Relay & Digital Input

Product Summary

The Sub-Zero SZ-7510 Series includes two models:

• SZ-7510-PDI – General-purpose controller with 1 relay and 230V digital input.

• SZ-7510-TDI – General-purpose controller with 1 relay and potential-free digital input.

Both models are designed for precise temperature control, compressor protection, and ease of use in industrial, commercial, and refrigeration applications.

Key Features

• Compact panel-mount design

• Input: NTC probe compatibility

• Relay Output: 1 Relay (8A, 250VAC)

• Digital Input Options: 230V input (PDI) / Potential Free input (TDI)

• Accurate temperature monitoring with ±1°C accuracy

• Settable ON/OFF time delay for compressor protection

• Password protection for parameters

• Auto-operation in case of sensor failure/error

• High-visibility LED display

Applications

• Display & pastry cabinets

• Small chillers & refrigeration units

• Cold storage monitoring

• HVAC systems

• Industrial automation panels

• Laboratory environments

Product Benefits

• Easy installation with standard panel cutout

• Reliable operation across commercial & industrial environments

• Enhanced compressor protection with ON/OFF time delay

• Flexible digital input options (230V or potential-free)

• Compact design suitable for space-constrained panels

• Accurate and consistent temperature control

FAQ

Q1: What probe type is supported?
A1: Both models support NTC temperature probes.

Q2: What is the difference between SZ-7510-PDI and SZ-7510-TDI?
A2: The PDI model uses a 230V digital input, while the TDI model uses a potential-free digital input.

Q3: Can these controllers be used in cold storage?
A3: Yes, they are suitable for cold storage, refrigeration units, and HVAC systems.

Q4: How are these controllers mounted?
A4: Both models are panel-mounted with a standard 29 x 71 mm cutout.