- Audible alarm with adjustable setpoint
- Backlit dual-readout LCD displays real-time reading over the maximum level since startup
- 15-second self-test at startup; during startup the LCD displays the alarm setpoint over the ambient temperature
- One-button calibration to 0 ppm in open air; the meter also can be calibrated to 100 ppm or 500 ppm by a standard gas
- °F/°C switch
- Auto power off
- Measurement range/resolution: 0 to 999 ppm/1 ppm
- Measurement accuracy: ±20% of reading from 0 to 100 ppm; ±15% of reading from 100 to 500 ppm
- Alarm threshold options: 25 ppm (factory default), 30 ppm, 35 ppm, 45 ppm, 50 ppm, 70 ppm, 100 ppm, 200 ppm
- Auto power off: After 15 minutes of inactivity
- Weight: 4 oz. (113g)
- Power source: Three "AAA" batteries (included)