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MMD-300 

WIRELESS MAGNETIC CONTACT 

 

mmd300_en 03/12 

 
The MMD-300 magnetic contact can detect opening of a door, window, etc. It can be used in 
conjunction with the MICRA alarm module with firmware version 2.02 or newer. This manual 
applies to the device with electronics version 1.2 or newer. 

1.  Features 

  Two reed switches allowing to select the magnet installation manner. 

  Input for connecting external wired detector. 

  LED indicator enabled in test mode. 

  Tamper protection in 2 ways – cover removal and tearing enclosure from the wall. 

2.  Specifications 

Operating frequency band .......................................................................433,05 ÷ 434,79 MHz 
Radio communication range (in open area) ............................................................ up to 200 m 
Battery ................................................................................................................... CR123A 3 V 
Battery life expectancy (energy save mode) ..................................................... approx. 3 years 
Additional input sensitivity.............................................................................................. 312 ms 
Standby current consumption ...........................................................................................80 µA 
Maximum current consumption........................................................................................27 mA 
Environmental class according to EN50130-5 ......................................................................... II 
Operating temperature range.............................................................................-10 °C...+55 °C 
Maximum humidity..........................................................................................................93±3% 
Enclosure dimensions....................................................................................24 x 110 x 27 mm 
Weight................................................................................................................................. 64 g 
 

 

Hereby, SATEL sp. z o.o., declares that this detector is in compliance with the 

essential requirements and other relevant provisions of Directive 1999/5/EC. The 

declaration of conformity may be consulted at www.satel.eu/ce 

 

 

3.  Description 

Opening the reed switch contacts after the magnet is moved away, opening the additional 
input, or opening the tamper contact will trigger an alarm. Information on the alarm is send by 
radio to the MICRA alarm module. 
The magnetic contact can work in the following modes: 

normal

 – each alarm results in sending a radio transmission. 

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