• Basic Knowlege of Security System
• Type of Camera, Resolution of Camera
• Night Vision (IR Illuminator)
• Camera Housing, Power Supply
• Type of Wire, Connecter, Pan Motor
• Connection to TV, Switcher (All Type)
• Quad, Time Laps Of VCR
• Types of DVR, Troubleshooting
• Voltage, Voltage Drop
• Video Interference
• Checking of DVR