Siemens DSC


Dual Sync Control Module, Red

Availability: Please Call for Availability

  • Factory New
  • Material Obsolete
Brand: Siemens Part #: 52839 Categories: , Manufacturer Part #: DSCSecondary Part #: 500-696872


The DSC Dual SYNC Control Unit is an optional accessory for a fire alarm system control unit. This unit provides synchronization of the MC and HMC strobes and synchronization and silenceability to the MTH series of electronic audible signals. When connected to a compatible polarity reversal type of notification appliance circuit, there is supervision of the wiring from the control unit through the DSC unit to the End-of-Line device.


Weight 0.7 lbs
Dimensions 1.40 × 4.60 × 4.60 in

Siemens Industry, Inc.





Unit of Measurement

EA (Each)

Production Status





  • Mounts (flush, semi-flush) to standard 4” square (10.2 cm.) backboxes
  • Synchronizes Models MC and HMC Series field-selectable, multi-Candela strobes
  • Synchronizes Siemens Fire Safety Model MTH Series temporal horns
  • Temporal horn silence while strobes continue on two (2) wires, via Siemens ZH-MC Series appliances
  • Output configuration can be two Style Y, (Class B) or one Style Z (Class A) notification circuit(s) up to 3A per circuit
  • Usable on any regulatory listed / approved reverse-polarity-type notification appliance circuit (NAC)
  • Polarized for DC supervision of NAC circuits with screw-terminal inputs for fast and secure In / Out field wiring of #12 to #18 AWG wire
  • Attractive, textured finish to enhance appearance and durability
  • UL S5568 Listed UL 1971 Standard) and ULC Listed; (CSFM (#7300-0067:0212) & USCG Approved (#161:002/22/7, #161:002/17/8 -> for Model DSC only)
  • Made in USA, ISO 9001 Quality Crafted

DSC & DSC-W – Dual Sync Modules

Siemens - Data Sheet

DSC Dual Sync Control Unit

Siemens - Installation and Wiring Instructions