WX2NB Manual v.1.0
Page 10 / 40
4.
OPERATION
The device communicates with a monitoring station using Wi-Fi, so the
transmitter can only be used in areas where wireless local area network is available.
If status of inputs is the same as programmed one (NO, NC, EOL-NO, EOL-
NC, DEOL-NO, DEOL-NC) a device stays in a rest. Change of status on any input
results in immediate signal transmitting of this event by the device.
Note :
Each input (IN1 – IN4) may be individually defined as normally open (NO) or
normally closed (NC). It means that when input was defined as NO, input shorting
will be an active state and when input was defined as NC, input opening will be an
active state. EOL and DEOL (parametrized and double parametrized) are options
where you use 1 or 2 resistors to distinguish alarm from sabotage.
All inputs react solely to status changes, which means that transmission will
only be performed if an active status appears at an input and remains for a pre-set
minimum time. If an active status is sustained for longer than the minimum time, it
only causes a single signal. Inputs can be activated again (another transmission)
after they return to their basic status.
To configure the transmitter to work with an emergency exchange telephone
communicator, the telephone number that the communicator reacts to must be
entered in the transmitter's memory.
When the receiver of the emergency exchange telephone communicator
module is picked up, the exchange begins dialling the number it needs to connect
to. Once the exchange dials the telephone number, the transmitter generates a
confirmation signal and waits for data from the emergency exchange - subsequent
DTMF tones generated by the exchange are treated as data. Once a sufficient
number of DTMF symbols is sent (16 for ContactID), the transmitter generates a
KissOff signal. Data reception from the exchange is finished when the emergency
exchange telephone communicator module puts down the receiver.
If the telephone number dialled by the exchange is not identical to the
number to which the module reacts, it takes no action and waits for the exchange to
put down the receiver and pick it up again - starting with the receiver is picked up,
the number dialled by the telephone module of the exchange begins to be checked.
All programmable parameters are saved in non-volatile memory, so they are
not lost on loss of power. Restoring power causes automatic transmitter activation
with the previously saved settings.