Honeywell T991A1715 Proportional Temperature Controller with 76.4" Bulb Length - Precise HVAC & Industrial Process Control for Greenhouses, Breweries & Food Storage

Proportional (135 ohm) remote bulb controllers for modulating control of water or air temperature in ducts, tanks and similar applications.

Fast response models (for duct mounting) have coiled sensing element giving at least four times faster response than standard models

Ambient temperature compensated for the case and tubing

Sensing element capillary tubing allows remote mounting of sensing element

Set point may be read and adjusted through cover

Throttling dial inside case adjusts proportional throttling range