Formaldehyde Meter Temp Range 0 Degrees to 122 Degrees F Accuracy +/-5 Percent Resolution 0.01 ppm Display LCD Auto Power Off Yes Low Battery Indicator Yes Data Hold No Data Storage No Power Source Li-Ion Battery Special Features Adjustable High/Low Alarms Simultaneous Display Includes Rechargeable Battery Universal AC Adapter/Charger Manufacturers Warranty Length 1 yr Calibration Certificate Included No