Honeywell Commercial T991A1012 Remote Temperature Controller

The Honeywell Commercial T991A1012 Remote Temperature Controller is designed for reliable remote sensing and modulating control in duct and tank applications. Featuring a copper bulb (1/2 inch diameter x 4-3/16 inch length) with a 20-foot capillary, this controller delivers precise temperature management up to 125°F. With a 24-30 VAC input at 50/60 Hz and a 1/2 inch conduit connection, it offers robust installation and flexibility. Set point ranges from 0 to 100°F and a throttling range of 3 to 30°F, enabling tight process control. Built for industrial environments, it supports direct immersion up to 50 PSI and comes in a durable gray housing, with one sensor input and an analog 135-ohm potentiometer output for seamless integration with control systems. Its compact footprint—2" W x 2-1/4" D x 5-5/8" H—helps you save panel space without compromising performance.

• Remote temperature controller with copper bulb and 20 ft capillary
• Modulating control for precise adjustments (throttling range 3–30°F)
• Electrical specs: 24–30 VAC @ 50/60 Hz; 1/2" conduit connection; 50 PSI direct immersion
• Applications: duct and tank environments
• Outputs and inputs: 1 sensor input; 135 Ω analog potentiometer output