Vega NB-14 / User Manual
10
Revision 04 of 24 January 2022
CONTACTS
When connecting a radio modem to external devices, consider the internal circuitry of
its digital inputs ALARM1 and ALARM2 shown below.
Contact
PCB designation
Description
1
GND
Ground
2
ALARM1
Security input 1
3
GND
Ground
4
ALARM2
Security input 2
5
GND
Ground
6
ONE_WIRE
1-Wire
7
RA_INPUT2
Input 2 of channel A
8
RA_INPUT1
Input 1 of channel A
9
RB_INPUT2
Input 2 of channel B
10
RB_INPUT1
Input 1 of channel B
11
GND
Ground
12
GND
Ground
There are two digital security inputs on the boars which allows to connect circuits with
the following types of NO contacts:
reed switch;
Circuit design of the digital inputs