DDM800 Universal Fire & Gas Detector Module
The DDM800 Universal Fire & Gas Detector Module is an MX
addressable module designed to monitor and signal alarms
from:
- One or two conventional 2-wire spur circuits
- One conventional 2-wire loop circuit
- One or two 4-20mA sensors
The DDM800 module may be used to connect zones of existing
conventional 20V detectors and interface them with an MX
addressable fire alarm system. The detectors in these zones,
however, will not be individually addressed.
The DDM800, a double sided printed circuit board (PCB), is
available in the following configurations:
- PCB module
- PCB module fitted to M520 cover for use with an MK backbox
- PCB module fitted to D800 IP55 housing
- PCB module fitted to Exd housing
The DDM800 has an integral MX loop isolator. When a section
of the MX loop adjacent to the DDM800 is shorted, the isolator
trips, isolating the shorted section, the yellow LEDs illuminate. This status remains until the short is removed.
The DDM800 may be fitted to an ANC-8 Ancillary housing or
DIN rail mounting for fitting in a suitable electrical
backbox. Alternatively it may be custom mounted on standoffs.
Features:
- Operates from either MX loop power or an
external PSU.
- Contains an integral MX loop isolator.
- Can be configured as Class B (spur) or Class A
(loop).
- Can be configured for BS5839 detector
removal.
- Can be configured for fast callpoints operation
(interrupt).
- Can be configured to suit current sinking or
current sourcing 4-20mA sensors.
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