... ,simple and easy installation and maintenance. * Multi-parameter backlight LCD display: measuring range,digital gas reading ,units, bar graph , system status ... ...22.8mA (linear), 3.6mA (fault signal) T90: <15sResolution: 1μA Accuracy: ±3%F.S., ±1%F.S.(on request)Operating ... % R.H. (non-condensing) Enclosure: Cast aluminumSize: 160mm(L)X140mm(W)X85mm(H) Ingress protection: IP66Weight: Approx. 1.3kg