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MSD-350
WIRELESS SMOKE DETECTOR
msd-350_en 03/19
The MSD-350 detector can detect the early stages of fire development when there is some visible smoke. It can
operate as a stand-alone device or as part of the wireless system. The detector is supported by:
PERFECTA 16-WRL, PERFECTA 32-WRL and PERFECTA-T 32-WRL control panels,
MICRA alarm module (firmware version 2.02 or newer),
VERSA-MCU controller,
MTX-300 controller.
This manual applies to the detector with firmware version 1.0. The rating plate of the device is located inside the
enclosure.
1. Features
EN 14604 compliant visible smoke sensor.
Detection of optical chamber fouling.
Red LED for optical signaling.
Built-in sounder.
Test feature.
Tamper protection against enclosure opening (when working in a wireless system).
Battery status control.
2. Description
Smoke detection
An optical method is used for the detection of visible smoke. The detector automatically compensates for
gradual changes in the optical chamber caused by deposition of dust. When the concentration of smoke in the
optical chamber exceeds a given threshold, an alarm is triggered.
Fire alarm signaling
The alarm is indicated visually (LED steady light) and acoustically (intermittent sound) for 5 minutes. Pressing
the test/reset button (designated with the letter A in Figure 2) during the alarm will clear the alarm condition and
will block the smoke detection function in the detector for 5 minutes.
Operating modes
You can set the operating mode using the jumper (Fig. 4):
jumper removed – stand-alone mode.
jumper installed – working in 433 MHz wireless system. The detector is operating similarly as in the stand-
alone mode, but it additionally:
sends radio transmissions,
supervises the tamper switch state.
Working in wireless system
Radio transmissions
Every 15 minutes, the detector sends a radio transmission with information about its state (periodic
transmission). This allows the system to supervise the presence and performance of the detector. Additional
communication takes place in the case of alarm (smoke is sensed by the detector) or tamper (tamper switch has
been opened) and after restore of alarm (smoke is sensed no more by the detector) or tamper (tamper switch
has been closed).
Test mode
The test mo
de is turned on for 20 minutes after inserting the battery or opening the tamper contact. When the
detector is running in the test mode, the LED indicates:
tamper – ON for 2 seconds,
1


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Others manual(s) of Satel MSD-350

Satel MSD-350 User Manual - German - 4 pages

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