Features: Pressure rating 0-10 bar. Temperature rating 0-120°C. 2 standard options: 1/8, 1/4-inch. Suitable for floor heating systems. Installation Notes: When installing, do not use hand to move the header in a straight line (pressure gauge movement, wiring, table light should be on the same line). Pulling by hand (header rotation) may cause uneven pressure and lead to pressure gauge structure deformation, affecting performance and internal components or damaging the ring. Please use an external wrench for tightening. Package Includes: 1 x Temperature Pressure Gauge Specifications: Material: Plastic Thread: 1/8, 1/4-inch (optional) External thread diameter: 9.5 ± 0.2 mm Internal thread diameter: 8.8 ± 0.2 mm Pressure range: 0-10 bar Temperature range: 0-120°C Installation Guide for Home Water Distributor: 1. Locate the mounting hole of the water distributor and measure the internal thread size using calipers. 2. Confirm if the thermometer can be installed, then use a wrench to tighten the thermometer and observe pressure and temperature. Note: Please allow 1-3 cm error due to manual measurement. Ensure you are okay with this before purchasing. Due to differences between monitors, the picture may not reflect the actual color of the item.