Feature: 1. This temperature controller uses intelligent PID control and offers high accuracy. 2. Features a simple, detachable shell design for convenient maintenance and installation. 3. Equipped with a flame-retardant shell and high-conductivity silver contacts for enhanced safety and stability. 4. Utilizes a high-precision chip with SMT chip technology, providing high sensitivity, stability, and reliability for accurate temperature measurement. 5. Made from excellent plastic material, used for temperature detection with self-adjusting control. Specification: Item Type: Temperature Controller Model: REX-C400FK02-MxDA Material: Plastic Purpose: Used for temperature detection Panel Size: Approx. 48 x 96 mm / 1.9 x 3.8 inches Hole Size: Approx. 45 x 92 mm / 1.8 x 3.6 inches Operating Voltage: 220VAC, 50Hz/60Hz Temperature Range: 1~999 (°C) Temperature Control Accuracy: 1.0 Control Method: PID control and self-adjusting control Working Environment: 0-50°C, Relative Humidity: 30%~85%RH Input Method: K-type Output Mode: Relay (RELAY) Installation Form: Buckle Package List: 1 x Temperature Controller 2 x Buckle 1 x User Manual Note: The factory default setting for the product is 400 (°C), adjustable up to 999 (°C).