Mircom MID-65I


Detector Ion Smoke Head

Availability: Please Call for Availability

  • Factory New
Brand: Mircom FireAlarm.com Part #: 71804 Categories: , Manufacturer Part #: MID-65I


The MIR-65 Series incorporate proven sensing technologies, together with advances in materials and electronics technology. Having a wide operating voltage of 9-33VDC, the MIR-65 Series detectors can be integrated into most Fire/Security systems. The MIR-65 Series wide voltage range family consists of photoelectric smoke, ionization smoke, and heat detectors. The sensing part of the ionization detector consists of two chambers – an open outer chamber with a second semi-sealed reference chamber within. Mounted in the reference chamber is a low activity radioactive foil of Americium 241 which enables current to flow between the inner and outer chambers when the detector is powered up. As smoke enters the detector, it causes a reduction of the current flow in the outer chamber and, hence, an increase in voltage measured at the junction between the two chambers. The voltage increase is monitored by the electronic circuitry which triggers the detector into alarm state at a preset threshold. A highly visible external red LED flashes when the detector is in operational standby and changes to steady in alarm state.


Weight 0.2 lbs




Production Status



  • Wide operating voltage range
  • Advanced electronics technology
  • Flashing standby/steady alarm LED
  • Magnetic test switch
  • Low profile (1 5/8”H x 4” Dia.)
  • Can be used on security systems
  • Locking feature reduces tampering
  • Designed to meet approvals worldwide
  • Large range of bases available
  • Separate head/base design allows interchangeability and ease of installation
  • High RF, noise and insect immunity
  • Available in 2 and 4 Wire Kits


Conventional Smoke & Heat Detectors; MIR-65 Series
Mircom – Data Sheet