Cunyuer Speaker Polarity Tester, FH-168 Automotive Speaker Tester Phase Meter, Audio Horn Polarity Tester Phasemeter

About this product

Specification: Condition: New Material: Plastic Color: Black + Silver Size: As Picture Shown Built-in Battery: 1 x 9V 220mAh battery Package Weight: Approx. 139g/4.9oz #How to use the tester? the CD with the package include 4 section test music. section 1: left channel noise signal section 2: right channel noise signal section 3: phase test signal section 4: same as section 3 Put CD into the car CD player, play 1 or 2 section, and check if the left/right channel connection is correct. Play section 3 or 4, the speaker will generate a fixed frequency signal, bring the front end of the tester close to the speaker, and then press the test button. Green light flashes 3 times, red light flashes once indicating the speaker output positive phase (correctly connected); Red light flashes 3 times, green light flashes once indicating negative phase (reverse connection). Yellow light on indicates low battery (Including battery) Package List: 1 x Phase Meter 1 x CD