... test and two lines characters LCD display. Low battery, Auto power off, long battery life (60 hours continuous) Display Two lines characters ... ft or 5% + 1 mPower 6 pcs 1.5V size AAA alkaline battery.Input Protection The inputs withstand telephone ringing and loop voltages ... own network cables 4) Operates from a single 9V PP3 battery (not supplied)Colors Available : Black,red,blueType of Packing : ...