Usage Tips:Features: Pressure rating 0-10 bar. Temperature rating 0-120C. 2 standard for your option: 1/8/1/4-inch. Suitable for floor heating system. When installation, please don'for t use hand moving header straight- line wire (pressure gauge movement, silk, table light, is on the same line, by hand pull (header rotation-, due to the uneven can cause pressure gauge structure deformation, damage effect use effect and internal structure or old direct damage of ring, please outside a wrench. Specifications: Material: palstic Thread: 1/8/1/4-inch(optional) Diameter of external thread: 9.50.2mm Diameter of internal thread: 8.80.2mm Pressure range: 0-10bar Temperature range: 0-120 Installation of the home water distributor- 1.First find the mounting hole of the water distributor- and measure the size of the internal thread with calipers 2. Determine whether a thermometer can be installed, and then use- a wrench to tighten the thermometer to observe the pressure and temperature Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Temperature Pressure Gauge