Relay Module MDA1Y

Microprocessed algorithmic addressable device (with short-circuit isolator) installed as another element inside the
The module takes the power supply from the loop, but it requires an auxiliary 30V supply to give the necessary energy
to the devices controlled by the relays. It monitors the presence of voltage in the auxiliary supply line of 30V and
in the output of the monitored relays.
The module is protected by 0,9 A resettable fuse and each monitored output by 0,5 A.
The flashing of the transparent red LED indicates communication with the control panel. Illumination of the green
LED indicates the actuation of a relay.
It is a module with two relay outputs of simultaneous activation (with a single function), not only in its type of
application (sounder, switches or pre-alarm), but also in their timing and in the combination of sensors that activate
The R1 output relay is monitored with a line termination resistance of 33 kΩ, indicating the state of opened line
or crossed line. The R2 output relay acts as a dry contact NO and NC, not monitored, which typical application in
the energizing of the electromagnets of fire-resistant doors. Considering the consumption produced across the
system, it is recommended installation of an external power supply when connecting more than 10 electromagnets
altogether per detection system.
The device is placed in a rectangular heat-resistant ABS box.
The module is certified according to EN 54-18 Standard, and CE labelled according to the European Regulation of
Construction Products (UE) N°305/2011.


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