Feature: 1. Using intelligent PID control and self‑tuning control, stable and durable to operate 2. Removable shell design, simple and detachable shell, convenient for maintenance and installation 3. Flame‑retardant housing and high‑conductivity silver contacts provide safe and stable operation 4. With high‑accuracy chip, SMT chip technology, high sensitivity, stable and reliable, accurate temperature measurement 5. The screen panel is clear to display which can make sure the accuracy of readings Specification: Item Type: Digital Temperature Meter Model: REX-C400FK02-V x DA Material: Plastic Purpose: Used to detect temperature Panel Size: Approx. 48 x 96mm / 1.9 x 3.8in Installation Hole Size: Approx. 45 x 92mm / 1.8 x 3.6in Operating Voltage: 220VAC, 50Hz/60Hz Temperature Range: 1~999(℃), note: The factory setting value of the product is 400℃ (adjustable up to 999) Temperature Control Accuracy: 1.0 Control Method: PID control and self-tuning control Working Environment: 0-50℃, Relative Humidity: 30%~85%RH Input Method: K type Output Mode: Relay (RELAY) Installation Form: Buckle. Package List: 1 x Thermostat2 x Buckle1 x User Manual Note: 1. Check whether the meter indexing number specification and power supply voltage are the same as the meter 2. Check whether the wiring diagram is correct 3. For the thermocouple input signal, please use the compensation wire of the same material as the thermocouple wire 4. Pay special attention to the power input line and the sensor signal input line not to be confused and connected incorrectly, otherwise the entire instrument is burned out and scrapped and cannot be repaired