TENMARS ST-502 Desktop Indoor Air Quality (IAQ) Monitor (0 – 9999 ppm)

Power adaptor AC 100V~240V to DC 12V/1.0A.

- Internal backup battery to maintain date/time setting.

- Datalogging capacity 17000 records.

- Operation condition :0-50˚C (32-122˚F),5-95%RH(non-condensing).

- Storage temperature & Humidity:-10~60˚C (14~140˚F) ≦70%RH.

CO2:

Type:

Non-dispersive infra-red(NDIR)

Measurement Range:

0 to 9999ppm

Accuracy:

±5% of reading or ±75ppm.(0-2000ppm, others out of scale range)

Resolution:

±1ppm

Response Time:

Typical 2 minutes by 90%

Temperature:

Type:

Thermistor

Measurement Range:

0˚C~50˚C/32˚F~122˚F

Accuracy:

±1.0˚C/±1.8˚F

Resolution:

0.1˚C/0.1˚F

Response Time:

Typical 1 second

Relative Humidity:

Type:

Capacitive

Measurement Range:

5-95%

Accuracy:

±3.0%RH(20~80%);±5.0%RH(80%)

Resolution:

0.1%

Response Time:

Typical 4 seconds