0.1°
Display LCD with backlight
Display size 26 x 44 mm (1.0 x 1.7”)
Warm-up period 30 seconds
Response Time CO
2
: <30 seconds (90% step change)
CO: <60 seconds (90% step change)
Tair: <2 minutes (90% step change)
RH: <10 minutes (90% step change)
Sensor Type CO2: NDIR (non-dispersive infrared) technology
Humidity: Capacitance sensor
Temperature (air): Thermistor
Operating Conditions -20 to 50
o
C (-4 to 122
o
F) CO
2
sensor
0 to 50
o
C (32 to 122
o
F) CO sensor
-20 to 50
o
C all other parameters
Storage Conditions -20 to 60
o
C (-4 to 140
o
F); 10 to 90% RH non-condensing
Power Supply 4 x 1.5V ‘AA’ batteries or AC adaptor (9V)
Battery Life approx. 24 hours (alkaline batteries)
Dimensions / Weight 205 x 70 x 56mm (8.1 x 2.8 x 2.2“) / 200g (7.1 oz.)