Vega SI-22 / User Manual
9
Revision 08 – 15 September 2020
3 OPERATION
CONTACTS
The pulse counter has 4 pairs of contacts and it is able to connect circuits with the
following types of NO contacts:
- reed switch;
- mechanical pushbutton;
- open-drain output.
Equipment with NAMUR pulse output is not supported
Polarity effects only "open collector" circuits.
Pulse inputs can be configured for work in the "Security" mode via the “Vega LoRaWAN
Configurator” application. In this mode, the device does not count pulses at the "Security"
input, but only monitors its status. Should the "Security" input trigger, the device is activated
and sends an alarm message to the network.
When connecting a radio modem to external devices, consider the internal circuitry of
its pulse inputs shown above.