---This thimble sensor is compatible with all Heatmiser Thermostats that accept remote sensors. It is compatible with most heating systems, including gas, oil, and electric boilers. It has a temperature range of 0-50°C (32-122°F) and a humidity range of 20-90% RH, making it suitable for use in a wide range of environments. ---The sensing element is mounted in an attractive ‘thimble’ enclosure for surface mounting, typically on a backplate or a ceiling tile in the natural air flow of the room. The device is designed to be versatile and can be used in a range of applications, from residential to commercial. ---The device is reliable and comes with a two-year warranty for added peace of mind. The cable length is 2m Diameter: 9.