Trane SEN1789 Smoke Sensor L99H008 With 7-day programming capability and

With 7-day programming capability and non-volatile memory for permanent program retention

You must use a Lennox-specific conversion kit if your application requires propane

Durable Construction: Built to withstand standard operating temperatures in high-demand environments

Durable Construction: Features a forged brass body and EPDM O-ring stem seals for a 580 psig static pressure rating

this externally equalized TXV facilitates accurate superheat control and improved seasonal efficiency across light commercial rooftop units and chillers

Trane SEN1789 Smoke Sensor L99H008 With 7-day programming capability andThe Trane SEN1789 Photoelectric Smoke Sensor is a critical safety component designed for precise duct smoke detection within commercial and residential HVAC systems. As an OEM replacement for models like the SEN01789 and SL 2000 P 3WTRA, this unit utilizes advanced photoelectric sensing technology to identify smoldering fires by monitoring light scattering patterns within the air handler. This high sensitivity approach ensures reliable HVAC system