Features HIGH PERFORMANCE: The thermostat circuit board has the characteristics of high wiring density, high accuracy and small size, easy to operate with less interference. PID ADJUSTMENT: The PID algorithm restores the measured speed to the desired value with minimal delay and overrun by increasing the power output of the transformer. MULTIPLE USES: Suitable for machine tool equipment, heating equipment, boiler equipment, temperature control equipment, automation equipment, etc. EASY OPERATION: The controller can digitally control the temperature, with high accuracy and sensitivity, and the operation is convenient and intuitive. LED DISPLAY: The intelligent temperature controller adopts 7-level LED display (PV: red, SV: green), with relay alarm output, efficient and durable. Specification: Item type: smart digital thermostat. Material: PC. Permissible voltage range: 90% to 110% of rated voltage Output current: 4-20MA Rated voltage: 100-240VAC Display Method: 7 Stage LED (PV: Red, SV: Green) Panel size (L x H): approx. 48 x 96 mm/1.9 x 3.8 inches. Character size: PV (L x H): approx. 7 × 14.6 mm/0.3 × 0.6 inches. SV (L x H): approx. 6x12mm/0.2x0.5in Control accuracy: 1~100℃/0.1~50℃ Control mode: ON OFF, P, PI, PD, PID control Alarm output: relay AL1, AL2, 250VAC 1A Package list: 1 x Thermostat 2 accessories. 1 x user manual (English language not Small note: Please pay attention to electrical safety when using it. Package List 1 x Thermostat 2 x Accessories 1 x User Manual