SUBZERO SZ-7515T-DI

Temperature Controller-8(3)A Relay, DI & Buzzer

0.1 Resolution for Precise Control
Digital Input for Compressor Fault
Touch Sensitive Keypad
Cooling & Heating Mode Selection
External Buzzer for Faults
Settable ON & OFF time delay for Compressor Protection
Password Protection for Parameters
Auto Operation in case of Sensor Failure/Error
High & Low Temperature Logs
Applications: General appliances like Deep Freezers, Display Cabinet, Pastry Cabinet

Description

Control Type: PID (Proportional-Integral-Derivative) or On-Off (configurable). The “T2” typically indicates a dual-probe or advanced timing version of the standard 7524.
Input Type: Dual NTC Sensors (1 for Room Temperature, 1 for Evaporator/Coil Temperature).
Output Configuration: Features three independent relays:
1. Compressor: Usually 8(3)A or 20A depending on the specific build.
2. Defrost: 8(3)A (Heater control).
3. Evaporator Fan: 8(3)A

Temperature Range: $-50^{\circ}\text{C}$ to $+50^{\circ}\text{C}$ (Standard for refrigeration/freezing).
Accuracy: $\pm 1^{\circ}\text{C}$ .
Resolution: $0.1^{\circ}\text{C}$ (for precise readout) or $1^{\circ}\text{C}$ settable.
Power Supply: Standard $230\text{V AC} \pm 15\%$ ( $50/60\text{ Hz}$ ); also available in DC variants.

Display: 3-Digit, 0.56″ High-brightness Red LED display.
Protection: Built-in Compressor Protection Algorithm (prevents short-cycling).
Ingress Protection: IP65 rated front panel (dust-tight and protected against water jets).
Panel Cutout: $71 \times 29\text{ mm}$ (Industry standard “Small” format).

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