Apollo STS25

Sampling Tube Duct Detector 25

Condition: New
Brand: Apollo
Status: Active
SKU: 71085
Manufacturer Part #: STS25

Additional information

Weight 1.2 lbs

Apollo Fire Detectors




Production Status



  • Relays may be energized from a voltage source of 24VDC, 24VAC or 115VAC
  • Each relay position contains a red LED which illuminates when the coil is energized. This provides a time saving device when checking an installed system – no metering is required
  • Single, dual or triple relay modules may be “snapped apart” from standard 2, 4 and 8 position masters DC input is polarized
  • “/S” and “/T” versions UL Recognized Component, “/C” and “/C/R” versions UL listed
  • Available in dust resistant enclosures with LED viewing port(s)
  • “/C” and “/C/R” versions mounted in enclosures
  • “/C/R” versions with red covers for NYC and other uses
  • “/T” versions come complete with track mounting hardware which facilitates installation in standard cabinets
  • “/S” versions supplied with spacers for installation on standard back panels
  • “/T” versions are configured for an available optional DIN/”A” series rail mounting clip (TK-CL)


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Air Products and Controls – Data Sheet