We are testing Ubiquiti's Access System and it has an input I've not commonly seen and never seen used: REN or Request-to-Enter:
**** ** **** * *** ******* that ******* * ****.
* **** ** **** ***** ** when ** *** ****. ***** *** a ***** **** '****-**' ***********? *** the ****** **** *** *** **** executed **, *** *********** ** ****** 'control' ** **********.
** *** *** ***? **** **** preferred ****** **** * ********* ***** for **?
***** ***** ** ****. * ***** understand ** ** *** ******, *** if ** *** ***** ** *********, why ** ** *****? **** ** need ** ********* ******* ****** **** an *** (*.*. ********), **'** ********** simply ****** *** ***** ******** ** the *** **** *** ***** ******** of *** ***** ******. **** ** not ***** ** *** ***** **** no *** ***** ** ********* ** well ** *** **** **** *** ACS ** **** **** ** ****** to ******* **** **** ******** ****.
** **** **** *** *** ***** to ********** **** ** *** **** but **** *** *** ********* **** effect ** ******* *** **** ** unlock **** ******* ** ********* ****** near *** *** ****** (** **** is *** *** ****** ****- ** is ********* ********* ** *** ******** 8 ** ***** ******** **** * REX ****** *********).