LCD Size: 75 x 52mm 
<br />Color: Dark gray&yellow
<br />Dual Alarm: sound and light. The display returns to zero when a shortcut resistance occurred, to prevent burning underground.
<br />The special design of the battery Monte easily. An insulation tester accurate, reliable and easy to use.
<br />rge LCD screen, LCD backlight ON / OFF key, easy to read.
<br />Strong anti-magnetic and anti functional disturbance.
<br />Full function protection, high voltage anti circuit design. High voltage and short alarm input.
<br />LCD Backlighting: Approx. 10 sec 
<br />Input Impedance: 1 M¦¸
<br />Sampling rate: 3 times / sec.
<br />AC Frequency response: 50-200Hz
<br />Operating mode: Manual range
<br />Max. screen: 1999 
<br />Power Supply: 1.5V AA battery x 6 pcs, power supply or external DC 9V (not included)
<br />Power consumption: Quiescent current approx. 3mA 
<br />Weight: about 660g 
<br />Dimensions: 176 (X) x 116 (W) x 62.5 (D) MM
<br />Package List: 1 X Digital Insulation Tester
<br />Note: Median resistance ensures that two terminal voltages is not less than 90% of the test voltage limit value low terminal resistance measurement.