gas safety device 1)Unit:ppm, mA, %,%LEL,%VOL 2)Display:backlight LCD, LED ... .8mA (linear), 3.6mA (fault signal) T90: <15sResolution: 1μA Accuracy: ±3%F.S., ±1%F.S.(on request)Operating temperature: Sensor dependent, -40 ... : 160mm(L)X140mm(W)X85mm(H) Ingress protection: IP66Weight: Approx. 1.3kg