Monitor: Power supply: DC13.5ν+ 0.5 Power Consumption: Maximim 10.5W,standy 0.5W Ambient Temperature: 0oC to 50oC  Monitor: 4" CRT Call Signal Sound: Electronic Chime(Ding Dong) Picture element: Horizontal 350 lines,Vertical 380 Lines Maximum Number monitor per system:4 sets per camera Maximum wire length From Camera:30 meters using 0.65mm cable Dimension and weight:219mm×192mm×78mm 1.8kgs Camera: Power Supply: DC12V 0.5A Power Consumption: Maximim 2.5W Ambient Temperature: -10oC to 50oC  Resolution:380Lines Minimum Illumination:0.5Lux Camera:F:1.8,F+3.1m/m Dimension and weight:130mm×96mm×49mm 0.50kg