Product Name: B/W Video Door PhoneModel Number: SD-920R1SPlace of Origin: ChinaSpecifications:1) CRT: 4" flat tube2) Power source: AC 100V-240 V3) Power consumption: 10 W4) Resolution: 380 TV lin

Product Name: B/W Video Door PhoneModel Number: SD-880D8(ABS)Place of Origin: ChinaSpecifications:1) Power source: DC 12V supplied by interphone2) Camera: 1/4" B/W CMOS (Pin Hole)3) Lens: F3.6 78

Product Name: B/W Video Door PhoneModel Number: SD-880D4-2Place of Origin: ChinaSpecifications:1) Power source: DC 12V supplied by interphone2) Camera: 1/4" B/W CMOS3) Lens: F3.6, 78oadjustable4)

Product Name: B/W Video Door PhoneModel Number: SD-880R3SPlace of Origin: ChinaSpecifications:1) CRT: 4" flat tube2) Power source: AC 100 - 240V3) Power consumption: 10W4) Resolution: 380 TV line

Product Name: B/W Video Door PhoneModel Number: SD-880R19ASPlace of Origin: ChinaSpecifications:1) CRT: 4" flat tube2) Power source: AC 100 - 240V3) Power consumption: 15W4) Resolution: 380 TV li

Product Name: B/W Video Door PhoneModel Number: SD-891D301Place of Origin: ChinaFeatures:1) Visitor calling, dual communication, unlocking2) Monitoring, internal calling3) Infrared LEDs on door statio

Product Name: B/W Video Door PhoneModel Number: SD-891DRT2Place of Origin: ChinaFeatures:1) Visitor calling, dual communication, unlocking2) Monitoring, internal calling3) Infrared LEDs on door statio

Product Name: B/W Video Door PhoneModel Number: SD-880R12SPlace of Origin: ChinaSpecifications:1) CRT: 4" flat tube2) Power Source: AC 100V - 240V3) Power consumption: 10W4) Resolution: 380 TV li

Product Name: Color Quad ProcessorModel Number: SD-4504Place of Origin: ChinaSpecifications:1) Refresh rate:a) NTSC: 60 fields/secb) PAL: 50 fields/sec2) Resolution (H x V):a) NTSC: 860 x 525b) PAL: 8