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Picture 1. External view and measurements of the device
D E S C R I P T I O N O F T H E D E V I C E A N D P R I N C I P L E S O F
F U N C T I O N I N G
The device
VRT012
consists of a microcontroller and GSM modem.
The microcontroller receives and processes signals.
There are 4 light diodes on the external board of the device as shown in picture 2.
Picture 2. Device
VRT012
The light diode
Power
is directly connected to the Power supply chain of the
microcontroller.
The light diode
Modem State
is connected to the GSM modem and its status depends on
the operation logic of the GSM modem and its specifications.
The light diodes
Relay
and
Signal Strength
are connected to the microcontroller and
reflect the status of the device.
The light diode
Relay
reflects the signal status of activating the internal relay. When the
relay is activated, the light diode is also on.
The light diode
Signal Strength
reflects the Power of the signal received via the GSM
modem.
When the Power is supplied, the light diodes
Relay
and
Signal Strength
reflect the start
of activating the programme and its various stages. If the connection is correct, the light
diodes are flashing alternately as specified in the table below, and when the operation status
is activated, they are operating in accordance to their main functions.
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