This TrolMaster PCT-1 sensor is a must-have for any hydroponic enthusiast who wants to keep track of their reservoir\'s temperature and electrical conductivity. With its accurate readings and easy-to-read display, you\'ll be able to ensure that your plants are receiving the best possible environment to grow in. Whether you\'re an indoor or outdoor grower, this sensor can be used in any environment. Its durable design and compatibility with a variety of hydroponic systems make it a versatile addition to your setup. So, if you\'re looking for a reliable way to monitor your reservoir\'s temperature and electrical conductivity, the TrolMaster PCT-1 2-in-1 EC + Temp Sensor is the way to go.