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◎ built-in power supply.
Model | MD-4201 | MD-4202 | MD-4203 |
Working voltage | 220V | 12VDC | 12VDC |
Working current | static current :20μA~40μA; alarm current :20mA | static current :20μA~40μA alarm current :20mA | |
Working mode | Independent | Network | Network |
Temperature sense | √ | ||
Alarm volume | ≥85dB | ≥85dB | ≥85dB |
Monitoring area | 20 square meter | 20 square meter | 20 square meter |
Working temperature | -5℃~50℃ | -5℃~50℃ | -5℃~50℃ |
Working humidity | 10%~90% | 10%~90% | 10%~90% |