[CO2 Controller]: CO2 Controller Carbon Dioxide Controller is designed to measure and monitor the CO2 levels throughout the day and night and has a reliable NDIR CO2 Sensor to accurately measure the levels of CO2 in the atmosphere. [Relay Function]: The CO2 Controller Carbon Dioxide Controller is equipped with a relay function to allow for complete control over the environment. [Installation]: This carbon dioxide controller is simple to install and can be used for greenhouses, grow rooms, factories, homes, and offices. [Advantages]: With its easy installation and reliable features, the CO2 Controller Carbon Dioxide Controller is sure to be an asset for any greenhouse, grow room, factory, home, or office. [Healthy & Abundant Crops]: Get the best environment for your plants with the help of this CO2 Controller Carbon Dioxide Controller and enjoy the advantages of healthy and abundant crops. Product name: Pressure reducer Item number: VR001 Measuring range: 0-4000PSI (MPa) Use: Carbon dioxide pressure reducer Structure: single stage type With LCD Screen Or Not: Yes Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on voltage:AC220V Colour:As Shown Material:Brass + Plastic Package Contents: 1 * pressure reducer 1 * power adapter 1 * plastic pipe Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.