Power Supply: AC 100–240 V, 50/60 Hz Temperature Setting Range: –50 to +999 °C / °F Thermocouple Input: Supports K, J, E, and N types (user-selectable via front panel) Application: Heating or cooling control Display: Dual-line, 3-digit display; user-selectable between °C and °F Display Resolution: 1 °C / 1 °F Control Accuracy: ±0.5% FS Control Modes: PID and ON/OFF (ON/OFF mode activated when P = 0) Output: One control output, supporting either: – Relay output: 3 A @ 250 VAC (resistive load) – Voltage pulse output: 12 VDC (for external SSR) Contact Rating: 250 VAC, 3 A (resistive load) Alarm: One alarm with six configurable modes — high deviation, low deviation, process value high, process value low, upper limit, lower limit Power Consumption: ≤10 VA Operating Environment: 0–50 °C, 30–85% RH, non-corrosive atmosphere Front Panel Labels and Functions: PV: Process (measured) value / parameter symbols SV: Set value / parameter set values OUT: Output indicator LED AT: PID auto-tuning indicator LED AL1: Alarm indicator LED ▲: Up arrow key (increment) ▼: Down arrow key (decrement) ◀: Shift key MODE: Parameter access and set-value confirmation Dimensions (L-type): 96 × 96 mm Panel Cutout Size (L-type): 92 × 92 mm Housing Material: Plastic Color: As shown Package Includes: 1 × Digital PID Temperature Controller 1 × English User Manual