Browsing through the documentation, I'm only coming across this, but it appears to be incorrect...
According to the documentation, they are stating that STAY/NIGHT are the same thing, but according the Vista 20P panel, they are not.
https://www.alarmdecoder.com/wiki/index ... #Bit_field
Position Description
1 Indicates if the panel is READY
2 Indicates if the panel is ARMED AWAY
3 Indicates if the panel is ARMED HOME
4 Indicates if the keypad backlight is on
5 Indicates if the keypad is in programming mode
6 Number (1-7) indicating how many beeps are associated with the message
7 Indicates that a zone has been bypassed
8 Indicates if the panel is on AC power
9 Indicates if the chime is enabled
10 Indicates that an alarm has occurred. This is sticky and will be cleared after a second disarm.
11 Indicates that an alarm is currently sounding. This is cleared after the first disarm.
12 Indicates that the battery is low
13 Indicates that entry delay is off (ARMED INSTANT/MAX)
14 Indicates that there is a fire
15 Indicates a system issue
16 Indicates that the panel is only watching the perimeter (ARMED STAY/NIGHT)
17 System specific bits. 4 bits packed into a HEX Nibble [0-9,A-F]
18 Ademco or DSC Mode A or D
19 Unused
20 Unused