... HK-TM803 1) 3.5 "TFT-LCD 2)Lithium Ion Polymer Battery support 12 hours working time Multifunction CCTV PTZ Tester : ... of PTZ camera. Support RS232 and RS485 interface, the rate 150-19200bps Powerful in testing LAN cable, measuring the ... pcs Lithium Ion Polymer Batteries, 3.7V DC2800mAhRechargeable4 hours recharging time, work for 15 hoursLow ConsumptionSleeping mode, display battery power stateOther ...