Features: 1. . 2. This product has PID self-identification function. 3. Clear screen display for better readability. 4. Wide temperature measuring range: 0-400. 5. Suitable for vegetable greenhouses, domestic water tanks, aquariums, aquaculture, and other temperature-controlled systems. Specifications: Condition: Model: REX-C100FK02-M*AN PID self-identification function Input Signal: K-type Thermocouple Temperature Range: 0-400 Master Output: Relay contact output Alarm Function: No Weight: Approx. 146g / 5.1oz Mounting Hole Size: 45 x 45mm / 1.77 x 1.77in Product Size: Approx. 85 x 48mm / 3.35 x 1.89in Package List: 1 x Temperature Controller Note: The new or old version of this product may be shipped randomly. Please confirm you are comfortable with this before placing your order.