The IAQ Logger, when combined with the Telaire 7001 Handheld CO2 Monitor, records the three leading indicators of indoor air quality: (1) temperature, (2) relative humidity, and (3) carbon dioxide.

Specifications

Size	107 mm x 74 mm x 22mm (4.2” x 2.9” x 0.9”)
Weight	110 g (3.75 oz)
Case Material	Noryl® plastic
Operating Limits	-40 to 70ºC (-40 to 158ºF) and 0 to 95% RH (non-condensing)
Battery	3.6 volt Lithium
Battery Life	10 years under normal use (factory replaceable)
Memory Size	32 KB (32,767 readings)
Sampling Methods	1. Continuous (First-in, First out) 2. Stop when full (Fill-then-stop)
Sampling Rates	From 8 seconds to once every 5 days
Resolution	8-bit (1 part in 256)
PC Requirements	IBM PC or 100% compatible with at least 2 MB RAM, 2 MB of hard drive disk space and one free serial port
Software Requirements	TrendReader® Standard - compatible with Windows 3.1, 95, 98, 2000, Me, NT and XP

Temperature Sensor Specifications

Type	NTC Thermistor
Range	-40 to 70ºC (-40 to 158ºF)
Accuracy	+/- 0.2ºC over the range of 0 to 70ºC (+/- 0.3ºF over the range of 32 to 158ºF)
Resolution	0.4ºC (0.7ºF) @ 25ºC; better than 1ºC (1.8ºF) between -25 and 70°C (-13º and 158ºF); better than 2.0ºC (3.6°F) between -40 and -25°C (-40ºF and -13ºF)

RH Sensor Specifications

Type	Capacitive thin polymer film
Range	0 to 95% RH
Accuracy	+/- 4% RH from 10 to 90% (-20 to 40ºC [-4 to 104ºF])
Resolution	Better than 0.4% RH between 25 and 60% RH at 25ºC (77ºF)

CO2 Sensor Specifications (in Telaire)

Range	0 to 4,000 ppm voltage output (0 to 10,000 ppm on display)
Sensitivity	+/- 1 ppm
Accuracy	+/- 50 ppm or +/- 5 % of reading (whichever is greater)
Repeatability	+/- 20 ppm