How to test the RF280THS wireless smoke used on the D4412 and D6412.
When testing the RF280THS by pressing the 'Test' button does not generate a panel alarm.
How to interpret the 'Check Device' display on a D1255 or D1260 keypad.
Why does the keypad display "Check Device"?
How to locate which point generated the 'Check Device' display and modify programming to prevent the display.