This recently came up in our Access Control 101 class -
Do you still use non-IP door controllers? In what applications?
**** **** *********** ********* *** *** IP ********* *** *** ********* ** ethernet, *** ** *** **** ****** networks ********* ****** *******. ****** **, panels *** *********** **** ********* ***** RS-485, **-***, ** ***** **-*** *** now ****** ***** ********* ** ***-*** or ******* ************.
***** ** *** *** ***-** **** controllers?
***** * ***** ***** ** ** the **** **** ** ***, *** me ******* * ************:
*** *********** **** ** ******* ** the ******* ******/****** ****, ** * cabinet ~**' ***** *** **** ****** to *******. *** **** ********** ******* ports *** ***.
**** ****** *********, *** **** **** a ******** **/***** ***** ****** *********, while *** ** ****** *** *** powered *** (*** *** **** ** this ************) **** ********** ****** *** the ******(*), ******(*), *** ***** *********** connected.
***** **** ******** ************ ****** **** view?
** ** ****, * ***** *** serial *************** ** *** * ******** **** existing ***** ******** *** ********** ***** *** ****** ** ******* port ***** ** **** **** **** to *** ******* ******.
* ** ********* ** ****** ** LSP *** **** *** ********** *** say * *********. *** *** * power ****** ***** ** ** **** is *** ** *****.
**** *******, *** *** **** ** the **** *** ***** **** ***. The ***** *** ** ****** ** board ** ** * ****** ****** goes **** **** ***** ** *** work. ** ** *** ******* ** LSP *** ** *** **** * would ****** *** /****/**** **** *** expanders.
*********, ***** *** ***** ******* ******** when ******* ****** *********** ** *** not ********* *** ****** ** ********** before ********* ****** ***.
* **** **** **** ***** ***** is * ****** **** ** *** door ***********. **** ****** ** **** like * **** **** ***** ***.
*** ******* * *** **** ******** the ***** **** *** *** ********** is *** ****** *** ****** *** the ****. ** ** **** * wide ******* ** ******** * ***'* really **** *** ***** *** **** controllers ***** **** * ****** ********* door **** *** * **** **** nearby.
** ** * *** ** ******** and **** *** ** *** ***** 1(2) **** *** **********. ** *** time *** *** **** *** ***** as **** ***** * ****** **** for *** * **** **********.
*** ****** **** ********** ** **** useful *** *** ********** **** ***** running ***** ** *** **** ** a ********* / **** ***********. ******* the *** ** *** ****, **** it ***** *** **-**, *** ***'** golden.
*** ******** ************ *** **** ***** to ****** ** ****, ** ********** it.
*** ******* ****** ** **** ******* UPS's *** *********, *** *** **** required ** **** ** ****** ****** stack ******* *** * **** ****** of **** ** *************. ** "*** school" ***** ******** ** *** **** have * ***** ** ~$*** ** 12vdc/12AH ********* **** **** **** *** 8-12 ***** (** *****) -- *** longer **** **** ******* ****** *** going ** ****.
*** ****** ****** ** ******* **** Shannon ********* ***** -- **** ** fused ******* *** *** *****. *'** done ****** ** **** **** **'* inevitable **** ** **** *****, ********* is ***** ** ***** * **** wire ** *** *****, *** *****'* no ******** ****'* ***** ** ***** havoc ** *** **********.
*** ** *** * ******** ********* question. ** ****** ******* *** ******** back ** ** ****** ******* ********** server? * ****** **** ** ***** common ** ***** *** ** ** but ******** ** *** ***** ** this *** *** ******* ** *** last **** ** *****?
*****, ******* **** *********** ** ****** equipment *** **. ** ***'* **** any ******* **** ******* ** ****** via **-***
*** **** * **** ** *******. We ***** **** ****** *** **** was ******** *** * ********.
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*** *** *** ********* *** *** time **** ******* ********. ** *** have **** **** *** ***** ** the *** *** *** ******** ******* drops?