6.1 Using electric locksWhen a commercially available electric lock is connectedto the main monitor, you can unlock a door or gate usingthe main monitor. You can also select the length of timecontrol signals are sent for to unlock the door or gate.(How long the door or gate remains unlocked dependson each electric lock's specification.)R A maximum of 2 electric locks can be connected tothe main monitor. When you use an additionaldoorphone, the maximum number of the electriclocks that can be connected to the doorphonedepends on the type of doorphone. Consult yourdealer for further information.R For detailed information about connections, see theoperating instructions included with the electric lockand the Installation Guide of this product.6.1.1 Configuring electric locks1 Press M N.2 Select “Connected devices” ® .3 Select “Electric lock” ® .4 Select the doorphone (“Doorphone 1” or“Doorphone 2”) that you want to assign the electriclock to ® .5 Select the type of the electric lock ® .6 Select the device that the electric lock is connectedto ® .7 Select the unlocking time ® .8 When finished, press M N.Electric lock settingsOptions listed below are available.“Unlocking buzzer sound”:Determines whether the doorphone sounds a buzzerwhen the electric lock is unlocked. See page 21.“View extension after unlocking”:Determines whether to extend the displaying time of thedoorphone image when the electric lock is unlocked. Seepage 21.6.1.2 Unlocking electric locks1 Press while talking or monitoring.R If there are 2 electric locks available, select theelectric lock to be unlocked ® ® pressto unlock another electric lock.Note:R You can only unlock the door or gate when talking ormonitoring.R When using multiple electric locks with differentdoorphones, you can only operate the locks from thedoorphone that they are connected to.6.2 DoorbellsA doorbell may be connected to your main monitor. Inthis case, the main monitor and extension monitor willring when someone presses the doorbell button.When a doorbell is connected to your main monitor,configure the main monitor as follows.Press M N ® “Connected devices” ®“Doorphone connection” ® “Doorphone 2” ®“Use door bell” ® . When a beep sounds,press M N.Note:R Connect a doorbell to the IN3 and IN4 terminals. (Thedoorbell will not operate if connected to otherterminals.)6.3 Panasonic PBX integrationConnecting the main monitor to a PBX allows you to usePBX extensions to answer doorphone calls.Please use only a Panasonic PBX (page 4).R For detailed information about connections, see theoperating instructions included with the PBX and theInstallation Guide of this product.Note:R If you answer a doorphone call with a PBX extension,the doorphone camera image will be displayed on themain monitor, and is displayed to indicate thata PBX extension is on the call.R While is displayed, you cannot answer callsusing the main monitor.R The display will turn off when the call between thedoorphone and the PBX extension ends, or after 3minutes.R If you answer a doorphone call with the main monitor,the call will continue to ring at the extension for about15 to 30 seconds. After you answer the call, theextension user cannot answer the call or join the call,even if the extension is ringing.When using two doorphones (excluding an optionalVL-V591 lobby station; page 4)From the PBX extension, you can only call thedoorphone that you last received call from or talked with.176. . Using electric locks and other devices6. Using electric locks and other devices