How to distinguish whether the defibrillator is a monophasic wave or a biphasic wave?

Japanese photoelectric cadiolife series defibrillation 6 starts with monophasic wave, and 7 starts with biphasic wave.

The biphasic wave of Japan Optoelectronics is unique, and the best defibrillation energy is 150J, but the high-energy bidirectional wave technology is implemented.

If you don't understand, please consult Q25389780 1.