Honeywell T991A21 Insertion Thermostat 100 Degrees Fahrenheit

The Honeywell T991A21 Insertion Thermostat is a reliable industrial-grade temperature control device designed for HVAC and commercial applications. Built for accurate temperature sensing up to 100 degrees Fahrenheit, this thermostat uses an insertion-style remote bulb and capillary tube to monitor temperatures in ducts, tanks, or piping systems. Known for Honeywell’s durable construction and dependable performance, the T991A21 is ideal for maintaining consistent temperature control in heating and cooling equipment and is commonly used as a replacement or upgrade in existing systems.

Specifications:

• • Brand: Honeywell

  • Model: T991A21

  • Type: Insertion Thermostat / Temperature Controller

  • Temperature Range: Up to 100°F

  • Sensing Method: Remote insertion bulb with capillary tube

  • Application: HVAC, industrial, and commercial temperature control

  • Mounting Style: Insertion / immersion

  • Construction: Industrial-grade metal housing

  • Condition: NEW Open Box

  • Included: Thermostat only, no additional accessories unless shown