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| Model | PK-20A35P(Self Drive) | |
| Rated Voltage | 12 V | 24 V |
| Operating Voltage | 3-20 V | 3-28 V |
| Sound Output at 10cm (dB) | 90 dB | 95 dB |
| Current consumption | 10 mA | 15 mA |
| Operating Temperature (℃) | -30~+70 ℃ | -30~+70 ℃ |
| Storage Temperature (℃) | -20~+60 ℃ | -20~+60 ℃ |
