Digital LCD display,Auto zero,Auto/Manual zero,LED light audible alarm,High accuracy,Quick response,Pocket size,Easy to use. 1.Product Name:Carbon Monoxide(CO) Meter(1000)Digital LCD displayAuto zeroAuto/Manual zeroMemory for 10 sets dataRecord modeLED light audible alarmHigh accuracy,Quick responsePocket size,Easy to useFast samplingMax holdAuto power pffAbove 200PPM,Beeper sounds2.Specification ...