System Sensor D2 Smoke Detector 30067439-890 What is the primary difference

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

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

and R407C refrigerants

Johnson Controls T-4000-2645 Gold Plastic Cover

Designed to provide critical over-pressure protection

System Sensor D2 Smoke Detector 30067439-890 What is the primary differenceFor 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