Maxitrol TS121B

Maxitrol TS121B is a precision discharge air sensor designed to monitor furnace outlet temperatures in the 120-170°F range, helping your HVAC system stay safe and efficient. This reliable temperature sensor provides accurate readings to the furnace control for proactive adjustments and consistent performance.

Designed for easy integration with Maxitrol control modules and standard furnace wiring, the TS121B features robust connectors, stable signal output, and quick installation. Its sealed housing protects sensitive electronics from dust and moisture, while calibrated sensing elements deliver repeatable readings across a wide temperature span. Whether you're upgrading a legacy furnace or stocking OEM spare parts, this sensor helps maintain consistent combustion control and safer operation.

• Accurate discharge air readings across a 120–170°F range
• Durable construction for harsh HVAC environments
• Easy mounting and reliable electrical connections
• OEM-ready compatibility with Maxitrol systems
• Improves safety and energy efficiency with real-time feedback

Add the TS121B to your furnace kit for dependable discharge air monitoring and optimized performance.