• DE-721B Phase Sequence Tester

DE-721B Phase Sequence Tester

3 phase check for AC90V~600V
Open phase detection
Phase rotation direction Indication
Small light and portable in carrying pouch
Safety Standard:IEC61010, IEC61010-2-033, IEC61557-1, IEC61557-7,IEC-61010-031
Model : DE-721B

  • Measurement Range:3 phase check for AC 90V ~ AC 600V (Sine Wave)
  • Operation Frequency:45Hz ~ 70Hz
  • Power Supply:AA 1.5V x 2
  • Safety Standard
    IEC 61010-1 CAT.IV 600V
    IEC 61010-2-033
    IEC 61010-031
    IEC 61557-1
    IEC 61557-7
  • Color change LED phase direction indication



  • Operation:0°C~ 50°C(32℉~122℉)/<80% R.H.(no condensation)
  • Storage:-10°C~ 60°C(14℉~140℉)/<70%R.H.(no condensation)


  Dimension & Weight:

  • 104(L)x74(W)x33(H)mm
  • Approx. 310g (Excluding battery)



  • Alligator Clip (red, white, blue) x 3
  • Test leads + cap (red, white, blue) x 3
  • Instruction Manual x 1
  • Leather Gift Box x 1
  • 1.5V AA battery x 2


  • Phase rotation direction indication
  • Open phase detection
  • Bright LED light suitable for both indoor and outdoor operation
  • Hands free operation with built in magnet
  • Alligator clip convertible test lead for different testing object application
  • Light and portable in leather gift box

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DE-721 Phase Sequence Tester

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