Key Features• Up to 4 Groups (Up to 12 Monitors and 4 Individual Door Stations with 4 Electric Locks):4 groups of monitors can be connected to support up to 4 households.• Night Vision with LED Lights and Illumination Sensor:The LED automatically lights up when the surrounding area gets dark, making it easier for visitors to see at night.• 4 Name Plates: You can show the name of each household on a name plate.• Electric Lock Release: The door lock can be easily and quick released. If an optional monitor is connected, you can release locks from any room.• For Both Surface Mounting and Flush Mounting Supported:Support for both surface mounting and flush mounting, to enable installation in various environments.MonitorVL-MF70Surface mounting base × 1Flush mounting box × 1Screws (4 mm x 12 mm) × 44-pin connector × 42-pin connector (for electric lock*1) × 1Hex wrench × 1Wiring Schematic Diagram / System ConfigurationAccessory Information Optional AccessoriesVL-VF540Optional Door Stationfor Video Intercom SystemDoor Station(Doorphone)VL-VF580Switch BoxIncluded withthe optionalVL-VF580Basic system Fully expanded systemWire type and lengthFrom - To Max. distance Cable standard Cable type referenceDoor station - Monitor 50 m 0.5 mm² RVV4 (4-wire)100 m 0.75 mm²Electric lock - Door station 5 m 1.0 mm² RVV2 (2-wire)10 m 1.5 mm²Monitor - Monitor 50 m 0.5 mm² RVV6 (6-wire)100 m 0.75 mm²Group 1Group 2Group 3Group 4Switch box*3 Switch box (included with the optional VL-VF580, NOT included with the VL-SF70)*1 Electric lock (user supplied)4-wire1 234TERMINATION(SHORT)MONITOR1 : +V2 : G3 : AU4 : Vi5 : D1 : +V2 : G3 : AU4 : Vi5 : DMONITOR /DOOR STATIONMonitor 1TERMINATION(SHORT)MONITOR1 : +V2 : G3 : AU4 : Vi5 : D1 : +V2 : G3 : AU4 : Vi5 : DMONITOR /DOOR STATIONMonitor 2TERMINATION(SHORT)MONITOR1 : +V2 : G3 : AU4 : Vi5 : D1 : +V2 : G3 : AU4 : Vi5 : DMONITOR /DOOR STATIONAC adaptorAC adaptorAC adaptorAC adaptorMonitor 3TERMINATION(SHORT)MONITOR1 : +V2 : G3 : AU4 : Vi5 : D1 : +V2 : G3 : AU4 : Vi5 : DMONITOR /DOOR STATIONMonitor 44-wire4-wire4-wire*1 5-pin connector with coreVL-VF540 door stationVL-VF540 door station*1*1*1*2*3*2*2*2*2*1*2 Electric lock (user supplied)