Sensor type: ESM-01 Series.
Detection principle: electrochemical.
Response time: 60 seconds.
Sampling method: diffusion, optional sensor extender cable.
Display: digital LCD, auto backlight during alarm.
Alarm operation: latching and reset function.
Types of alarms: gas alarms: 1st, 2nd, STEL, TWA and OVER.
Trouble alarms: sensor connection, low battery, circuit trouble, and calibration error.
Operating temp. & humidity: -10°C to +40°C below 95% RH (non-condensing).
Continuous operation: more than 250 hours (at 25°C, no alarm).
Dimension & weight: 2.5 x 5.2 x 1.2 inches, 7.6 ounces.