Precision Sensing: Includes an internal humidity sensor and dedicated terminals for 4–20 mA remote humidity sensors and 10K type 2 remote temperature sensors

this Carrier 311213-405 replacement is the direct successor to legacy part numbers 308090-405 and 308570-304

Key Benefits for Technicians Interchangeable Design: Fully compatible with the X-9117-B7B

including models MP-2130

The body is marked with flow arrows

Reznor 126170 Freezstat Freon Precision Sensing: Includes an internalThe Reznor 126170 Freezstat is a heavy duty, field mounted freeze protection thermostat designed to prevent coil freeze up in commercial and industrial HVAC systems. This genuine Reznor OEM replacement part (model A19AAF 12C) features a wide temperature range of 25F to 225F, making it versatile enough for use as an outside air controller or a high ambient limit switch. The 10 foot capillary tube allows for precise sensing in blower discharge ducts,