• DE-721 Phase Sequence Tester

DE-721 Phase Sequence Tester

3 phase check for AC90V~600V
Open phase detection
Phase rotation direction Indication
No battery required
Small light and portable in carrying pouch
Model : DE-721

  • Measurement Range:3 phase check for AC 90V ~ AC 600V (Sine Wave)
  • Operation Frequency:45Hz ~ 70Hz
  • Test Time Limitation:AC 110V(continuous),AC 220V(3 hours),AC 480V(12 minutes),AC 600V(3 minutes)
  • Power Supply:no battery required 
  • Safety Standard
IEC 61010-1 CAT.IV 600V
IEC 61010-2-033
IEC 61010-031
  • Color change LED phase direction indication



  • Operation:0°C~ 40°C(32℉~104℉)/<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. 280g (No 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

  • 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

Related Products

DE-721B Phase Sequence Tester

Model : DE-721B