10
Zone 3 Request to Exit
You can also connect a N/O PIR (or other motion sensing device) or a mechanical switch
to Zone 3 (white/orange pair) on the 7873 keypad to provide Request to Exit capability.
See Activate Zone 3 REX on page 20. When Zone 3 shorts, the keypad relay activates
for between five and 250 seconds. This REX time is programmable with a default of five
seconds. See Zone 3 Rex Strike Time on page 20. During this time, the user can open the
protected door to start the programmed Bypass entry/exit timer. If the door is not opened
within five seconds, the relay restores to its locked state.
Note:
A Zone 3 Request to Exit (REX) is inhibited for three seconds after the keypad reads
a card and a door strike occurs. This is to allow area entry and pass under a REX PIR.
Additional Power Supply
The maximum voltage drop between the panel and any device is 2.0VDC. If the voltage at
any device is less than the required level, add an auxiliary power supply at the end of the
circuit. When the voltage is too low, the devices cannot operate properly.
Keypad
Keypad Interface
7800 Series keypads have an integrated LCD touchscreen user interface. The display can
be set up to display a custom logo image on the main screen. See the Custom Dealer Logo
Section on page 26. The display can also be programmed to turn off (blank screen) during
periods when the keypad is not in use. See Backlighting Brightness on page 16.
Warning:
Do not use any sharp objects to operate the touchscreen such as a pen or pencil.
Keypad Interface
Summary of Contents for 7872
Page 39: ......
Page 40: ...LT 1162 1 03 17274 ...
