อุปกรณ์โมดูลตรวจสอบแบบสองสาย สำหรับสัญญาณเตือนอัคคีภัยแบบสัมผัส Honeywell Morley

The HM-DMMI-UL Monitor Module is intended for use in intelligent, two-wire systems, where the individual address of each module is selected using the built-in rotary switches. It provides either a two-wire or four-wire fault-tolerant Initiating Device Circuit (IDC) for normally open, contact fire alarm and supervisory devices. The module has a panel-controlled LED indicator.

HM-DMMI-UL Applications: Monitor a zone of four-wire smoke detectors, manual fire alarm pull stations, waterflow devices, or other normally open, drycontact alarm activation devices. Use it to monitor normally-open supervisory devices with special supervisory indication at the control panel. The monitored circuit may be wired as an NFPA (Class B) Initiating Device Circuit. A 47K Ohm end of line resistor (provided) terminates the Class B circuit.

HM-DMMI-UL Operation: Each HM-DMMI-UL uses one of the available module addresses on an SLC loop. It responds to regular polls from the control panel and reports its type and the status (open/normal/short) of
its Initiating Device Circuit (IDC). A flashing LED indicates that the module communicates with the control panel. The LED steadily illuminates when an alarm starts (subject to current loop limitations).

  • Built-in type identification automatically identifies this device as a monitor module to the control panel
  • Powered directly by two-wire SLC loop. No additional power required
  • High noise (EMF/RFI) immunity
  • SEMS screws with clamping plates for easy wiring
  • Direct-dial entry of address: 61-99 for models SMX and STX
  • LED flashes during normal operation and steadily illuminates to indicate alarm


Nominal Operating Voltage15 to 32 VDC
Maximum SLC current draw5.0 mA (LED on)
Maximum IDC wiring resistance375 μA (LED flashing), 1 communication every 5 seconds, 47k EOL
Maximum IDC wiring resistance1500 Ohms
Maximum IDC Voltage11 V
EOL resistance47K Ohms
Temperature range32°F to 120°F (0°C to 49°C)
Humidity range10% to 93% non-condensing
Dimensions4.5″ (11.43 cm) high x 4″ (10.16 cm) wide x 1.25″ (3.175 cm) deep. Mounts to a 4″ (10.16 cm) square x 2.125″ (5.398 cm) deep boxS