Security door phone systems
Product Parameters： Name : Video intercom system for Digital calling apartment Model : LSD-892R11CI Product Specification : 7”inch TFT LCD display Hand-free intercom for clear voice. Monitoring the door. 16 melody rings for option Brightness, chroma and melody volume adjustable Wire requirement Outdoor unit to signal allotment :8 wireRVV5x0.5mm²(RVV4*0.5+RVV2*1.0+ RVV2 SYV75-5-96) Signal allotment to indoor unit :8 wire RVV5x0.5mm² Lock connection :2 wire RVV2x0.2 mm² Power supply connection :2 wire RVV2x0.2 mm Installation method :surface mounted....