... and test UTP cable test Video singal generator 3.5 INCH CCTV testerProduct Description CCTV tester, project tester, ... multimeter+optical meterSignal modeNTSC/PAL (Auto Adjust)Display3.5 inch TFT-LCD ,960 x 240 resolutionLCD adjustAdjustable brightness, contrast, ... devicePOWERPower AdapterDC5V, 2ABattery1 pcs Lithium Ion Polymer Batteries, 3.7V DC2800mAhRechargeable4 hours recharging time, work for 12 ...