The Mars Hydro MH-sensor-TH3in1 Smart 3-in-1 Climate Sensor is a sleek and compact device designed for monitoring temperature, humidity, and light levels in a grow room. The cord is approximately 3-4’. With its smart home compatibility and app control features, this sensor offers convenient and precise environmental control for your indoor garden. The black matte finish and plug-and-play setup make it easy to integrate into your existing grow room setup. Built-in RJ12 connection plug ensures seamless connectivity for optimal performance. Made by Mars Hydro, a trusted brand in hydroponics, this sensor is a reliable tool for achieving the ideal climate conditions for your plants. It will make a great replacement sensor. I ship out FAST!!!!!!