●  Build in LCD back light , convenient for dark places and night work.
●  Memory function to save test results, date and time.
●  Auto power off function 
●  Frequency of AC voltage synchronous display  (sub display)
●  Output voltage synchronous display (sub display)
●  0ΩADJ adjustment
● Five ranges available for six insulation resistance tests 
    (50,100/125,250,500,1000 V)
●  Insulation test 500V / 20GΩ，1000V / 40GΩ range
●  ACV / DCV accuracy ±1%rdg±4dgt (sine wave)
●  Power saving mode

Features
DE-5050/5050R measures insulation resistance, low resistance, and AC/DC voltage.
●Build in back light LCD, convenient for dark places and night work.
●Memory function: Short press STORE key for data saving, max 100 sets. 
   And long press RECALL key to recall.
●Data saved with measuring time /date information.
●Auto power off when the instrument is left on for 10 minutes without operating.
●Voltage measurement with AC/DC auto detection.
  When main display AC voltage is >10V, the sub display shows the frequency value simultaneously.
● Insulation resistance measurement
．Auto discharge function:  Automatic discharge after measurement.
．COMPARE function : LCD back light indicates whether a measured value is less (red light ) than / or higher (green light) than the reference value.
．When the insulation resistance measurement starts, the LCD will 　display date, cycle and time of the measurement.
．DAR/PI measurement function
    Automatically calculated and displays DAR (Dielectric Absorption  Ratio) and PI       (Polarization Index) value during the insulation   resistance measurement.
．After measuring with MEAS  , the voltage will indicate on the sub     display of LCD simultaneously.
● 0ΩADJ  adjustment
In low resistance measurement, short circle the tips of test leads and press the 0ΩADJ key to cancel the resistance of the test leads.