Features PID Adjustment: The PID algorithm ensures precise temperature control with minimal delay and overshoot, optimizing energy efficiency and equipment performance. High Performance: The thermostat circuit board features high wiring density and small size, providing accurate and interference-free operation. Easy Operation: Digitally control temperature with high accuracy and sensitivity, offering convenient and intuitive operation. LED Display: The intelligent temperature controller utilizes a 7 stage LED display (PV: red, SV: green) with relay alarm output, ensuring efficient and Stable performance. Multiple Usages: Suitable for various equipment including machine tools, heating, boiler, and automation, offering versatile temperature control solutions. Specification: Item Type: Digital Smart Thermostat Material: PC Allowable Voltage Range: 90%~110% of rated voltage Output Current: 4-20MA Rated Voltage: 100-240VAC Display Method: 7 Stage LED (PV: Red, SV: Green) Panel Size(W x H): Approx. 48 x 96mm / 1.9 x 3.8in Character Size: PV(W x H): Approx. 7 x 14.6mm / 0.3 x 0.6in SV(W x H): Approx. 6 x 12mm / 0.2 x 0.5in Control Accuracy: 1~100℃/0.1~50.0℃ Control Mode: ON OFF, P, PI, PD, PID control Alarm Output: AL1, AL2 Relay, 250VAC 1A Package List: 1 x Thermostat 2 x Accessories 1 x User Manual Note: Please pay attention to electricity safety when using it. Package List 1 x Thermostat 2 x Accessories 1 x User Manual