3.5 inch high resolution color LCD monitor. Two types of power supply: AC Adapter or lithium battery.
Three measurement modes: spot-checking, monitoring and recording. Data can be stored on the computer and managed, analyzed and printed with a data analysis system.
Mute sleep monitoring with data storage and automatic energy-saving functions, automatic shutdown after five minutes of non-use.
Three levels visual and audible alarm and the alarm ranges are adjustable.