The TrolMaster Hydro-X Sensor - CO2 Sensor is designed for optimal performance with Hydro-X and Hydro-X Pro controllers, ensuring precise CO2 level monitoring in your growing space. This product comes complete with RJ12 splitters and cable, making it easy to integrate into your existing setup. Perfect for indoor gardening and hydroponic applications, this sensor is an essential tool for maximizing plant growth and monitoring environmental conditions.