System Sensor D2 Smoke Detector 30067439-890 We recommend inspecting the actuator

We recommend inspecting the actuator cup and follower for signs of pitting or corrosion while the unit is disassembled for the diaphragm swap

Common Technical Questions Is the Trane CNT3781 polarity sensitive

This HVAC blower relay is critical for maintaining proper sequence of operation

Designed to provide critical over-pressure protection

What is the primary difference between the TE-6361V-1 and the TE-6361V-2

System Sensor D2 Smoke Detector 30067439-890 We recommend inspecting the actuatorFor contractors and fire safety professionals, the System Sensor D2 remains a standard for reliable detection within air handling systems. This 2 Wire InnovairFlex Photoelectric Low Flow Duct Smoke Detector is engineered to operate across a broad air duct velocity range of 100 to 4,000 feet per minute, making it suitable for both high speed supply ducts and low velocity return air applications. Built on a modular platform, the InnovairFlex D2 features