A/3K-RSO - 3K Ohms @ 77 Deg F (25 Deg C). Options include LCD. ACI's room enclosures combine option flexibility with attractive styling and they have four-way airflow to minimize self heating. ACI room temperature sensors are designed for HVAC or Building Automation Systems. Specific applications include: zone control office and work space auditoriu conference room and hallways. Example Part Number: A/3K-RSO-LC Negative temperature coefficient4-Way airflo Night setbac Custom resistive setpoints

A/3K-S-4X - 3K Ohms @ 77 Deg F (25 Deg C) Thermistor The polycarbonate NEMA 4X strap on configuration has a sensor potted to the back side of a copper plate and a foam pad creates compression when the strap worm drive is tightened. The final result is a good thermal transfer with pipes that range from 2 to 5" in diameter. ACI Strap on temperature sensors are designed for HVAC or Building Automation Systems.  Specific applications include: chiller hot water system tank and boilers.