
| Terminal symbol | Terminal name | Terminal function description |
| PV + | Solar input (+) | Voltage detection board input, diode module positive, connected to PV input positive |
| PV - | Solar input (-) | Voltage detection board input, connected to the PV input negative |
| (+) | Switching module output | The diode module negative, connected to the inverter (+) |
| AI1、GND | Voltage detection signal | Analog signal, detect PV voltage, connect to inverter AI1, GND terminal |
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