... .CCTV system installation and maintenance2.Dome camera and All in one camera testing3.The CCTV transmitting channel testing4. ... the camera, adjust the aperture, foci and setting parameters, run and call the preset.Lithium Ion Polymer Batteries(3 ... 10dBmDisplay Resolution0.01dBPOWERPower AdapterDC5V, 2ABattery1 pcs Lithium Ion Polymer Batteries, 3.7V DC3000mAhRechargeable4.5 hours recharging time, work ...