The TRA100 Compact Temperature Transmitter is a low-cost, high-performance solution designed for precision measurement in demanding environments like heating and cooling circuits, hydraulics, and machinery manufacturing. Housed in durable 304 stainless steel with 316 stainless steel wetted parts, this compact device utilizes PT100 or PT1000 Class A sensors to provide accurate readings with a linearity and accuracy of 0.5%F.S. It supports multiple programmable measuring ranges, including -50 ℃to $50 ℃ and 0 ℃ to200 ℃, converting thermal data into a standard 2-wire 4–20mA electrical output. Engineered for reliability, the transmitter operates on a 10–30Vdc power supply, features selectable process connections, and maintains high stability with an annual drift of 0.25% FS, making it an ideal choice for construction automation and general air conditioning technology.