• Automatic drift compensation
  • Built-in, dual-sensor heat detector (option)
  • Built-in 85dB horn (option)
  • Easy-maintenance removable smoke chamber
  • Interconnectable using PRM-2W/4W polarity reversal modules
  • Low profile design
  • Local test button
  • RM-2 end-of-line power supervisory relay (4-wire detectors only) available separately