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JB-304 VILLA INTERCOM SYSTEMNameDoorphone system,access control,door station/camera,indoor phone/monitor,security product,video intercom.FeaturesDIY system with PLUG & PLAY connection.Up to 4 door stations and 4 indoor phones.Intercom between indoor phones.Calling transfer between indoor phones.E-lock can be connected to both door station and indoor phone.Anti-vandal, waterproof, cast aluminium, surface mount.Night viewing with IR LED.Handsfree indoor phones are optional.Pin-hole door camera is optional.Door stations technicalparameters:Camera:1/3 CCD(color), CMOS(b/w) Min. illumination: 0.01LUX Video Output: 1Vp-p/75Ω Working Voltage:DC18V±10% Working Current:≤500mA Environment Temperature:-40 70°Indoor phones technical parameters: Display:4 CRT/ 3.5'', 4'', 5'', 5.8'' & 7'' TFT-LCD Resolution:480×234(3.5'')/960×234(4'',5'',5.8'')/1440×234(7'') pixels Working Voltage:DC18V±10%Working Current:≤500mA Environment Temperature:-10 55°Power supply technical parameters: Voltage Input:AC100V 240V Voltage Output:DC18VCurrent Output:1A Power plug style:Optional Packing list(KIT)Video door station1 pieceTerminal connector someVideo indoor phone1 pieceVideo resistancesomePower supply(adapter)1 pieceScrew driver1 pieceDoor station bracket(VI)1 pieceExpansion plugsomeIndoor phone bracket1 pieceScrew some4 wires cable(10meters)1 pieceUser's manual1 piece