Measurement of four gas concentrations: oxygen (O2) carbon monoxide (CO) hydrogen sulfide (H2S) combustible gas (LEL). Three alarm fo...
>Support HDCVI Analog IP Video input >Record 1ch 25fps(1080N 720P) 15ch 15fps(1080N 720P) >4 ch Analog Audio HDMI VGA 2 H.D.D(12...