NEW! As of 4/2025 The RAD-0502 features a built-in solenoid valve and plug-and-play wiring for effortless setup, you can optimize your grow room environment in minutes. The RAD-0502: CO2 Controller for Grow Rooms is designed to maximize plant yields and help growers save money ensuring the right amount of CO2 is used every time. This device is used across indoor greenhouses, cultivation facilities, grow rooms, hydroponic farms, mushroom farms, or anywhere enhanced CO2 levels are used to maximize plant growth. Features Controls up to 2 zones (for small or large facilities) User configurable to control a CO2 tank and regulator Built-in temperature, humidity, and light sensors Customize your CO2 setpoints for high or low levels Dual mode for greenhouse or mushroom applications *Included* Solenoid Valve to turn on/off the flow of CO2 **All Sales Are Final** Watch the Video: Specifications Measurement Range: 0-3,000ppm CO2 CO2 Sensing Method: Non-dispersive Infrared (NDIR) Target Gas Ranges: 0-2,000ppm and 0-5,000ppm Measurements: Requires 1 liter per minute of constant flow per channel Resolution: 1ppm @ 0-1,000ppm; 10ppm above 1000pm Dimensions: 4.96 x 6.70 x 2.65 inches Accuracy: ±70ppm or ±5% CO2 Sensor Response Time: < 2 minutes Operating Temperature: -20°C to 60°C Sensor Cables: CAT5e Relays: 2 relays, either (Normally Open) NO or (Normally Closed) NCSolenoid Valve: Valve: 2-way, normally closed (DC-activated) Gas Ports: 1/4″ NPT inlet and outlet (standard pipe threads) Includes: 1/4″ NPT to barb fittings for tubing Electrical Power: Adapter 110/220 VAC Power Consumption: 1 W max @ 115 VAC 60 Hz | 2 W max @ 230 VAC 50 Hz Power Supply: