Dwyer TSF-4030 is a Thermocouple Limit Control component with a temperature range of 32 to 150°F (0 to 65°C) for ambient conditions and -4 to 176°F (-20 to 80°C) for storage. It has a high accuracy of ±1% FS and a power requirement of 115/230/12/24 VAC/VDC depending on the model. The control provides a 3-digit red display and has a front panel rating of IP64 (NEMA 3R). It supports Type J, K, or S thermocouple inputs and has a probe range of 32 to 999°F (0 to 700°C) for Type J and 32 to 999°F (0 to 999°C) for Type K or S. The TSF-4030 offers ON/OFF control with manual/automatic reset options and has a robust SPDT relay output rated 16A @ 240 VAC resistive. It consumes 4 VA power and has nonvolatile memory for storing settings. With a 1 HP horsepower rating, this thermocouple limit control is a reliable and versatile solution for temperature control applications.