Hikvision HF-Link Series
Support constant temperature alarm: indoor ambient temperature, greater than 57 ° C alarm.;Support differential temperature alarm: indoor ambient air temperature changes about ≥ 8 ℃/min alarm.;Support buzzer alarm, sound pressure 45 dB~75 dB@3 m. ;Lithium battery power supply, the average theoretica
HF-H2
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