STS-2.5' - STS-2.5' 2.5' Sampling Tube for SM501 Early detection of smoke and products of combustion present in air moving through HVAC ducts in Commercia Industria and Residential applications.  

SW1 - The SW1 is a 3-way pneumatic solenoid valve activated by a 24 VDC or VAC electric signal. The miniature valve is light weigh energy efficient and capable of continuous duty. An LED indicates power to the valve. The valve is equipped with two plastic and one metal barb which accepts 5/32" OD polyethylene or PVC tubing. A jumper shunt is mounted in series with the incoming power to allow local OFF override. The SW1 is covered by ACI's Two (2) Year Limited Warranty. Provides fail-safe control