| Temperature Sensor |
| Range |
0° to 50°C (32° to 122°F) |
| Accuracy |
±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F) |
| Resolution |
0.024°C at 25°C (0.04°F at 77°F) |
| Drift |
<0.1°C (0.18°F) per year |
| RH Sensor |
| Range |
1% to 90% RH (non-condensing)
|
| Accuracy |
±2% from 20% to 80% typical to a maximum of ±4.5% including hysteresis at 25°C (77°F); below 20% and above 80% ±6% typical |
| Resolution |
0.01% |
| Drift |
<1% per year typical |
| CO2 Sensor |
| Range |
0 to 5,000 ppm |
| Accuracy |
±50 ppm ±5% of reading at 25°C (77°F), less than 90% RH non-condensing and 1,013 mbar
|
| Warm-up Time |
15 seconds |
| Calibration |
Auto or manual to 400 ppm |
| Non-linearity |
<1% of FS |
| Pressure Dependence |
0.13% of reading per mm Hg (corrected via user input for elevation/altitude) |
| Operating Pressure Range |
950 to 1,050 mbar (use Altitude Compensation for outside of this range) |
| Compensated Pressure Range |
-305 to 5,486 m (-1,000 to 18,000 ft) |
| Sensing Method |
Non-dispersive infrared (NDIR) absorption |
| Response Time |
| Temperature |
12 minutes to 90% in airflow of 1 m/s (2.2 mph) |
| RH |
1 minute to 90% in airflow of 1 m/s (2.2 mph) |
| CO2 |
1 minute to 90% in airflow of 1 m/s (2.2 mph) |
| Logger |
| Radio Power |
1 mW (0 dBm) |
| Transmission Range |
Approximately 30.5 m (100 ft) line-of-sight |
| Wireless Data Standard |
Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0) |
| Logger Operating Range |
0° to 50°C (32° to 122°F); 0 to 95% RH (non-condensing) |
| Logging Rate |
1 second to 18 hours |
| Logging Modes |
Fixed interval (normal, statistics) or burst |
| Memory Modes |
Wrap when full or stop when full |
| Start Modes |
Immediate, push button, date & time, or next interval |
| Stop Modes |
When memory full, push button, date & time, or after a set logging period |
| Time Accuracy |
± 1 minute per month at 25°C (77°F) |
| Power Source |
4 AA 1.5 Volt batteries (user replaceable) or USB power source (5 V DC, 2 Watts) |
| Battery Life |
6 months, typical with logging and sampling intervals of 5 minutes or slower; 6 months or less with logging and sampling intervals faster than 5 minutes while logging CO2. Entering burst logging mode will impact battery life. With app use, battery life can be reduced by remaining connected, excessive readouts, audible alarms, and paging. Visual/audible alarms and other events can have a marginal impact on battery life. |
| Memory |
128 KB (84,650 measurements, maximum) |
| Download Type |
USB 2.0 interface or via Bluetooth Smart |
| Full Memory Download Time |
20 seconds via USB; approximately 60 seconds via Bluetooth Smart, may take longer the further the device is from the logger |
| LCD |
LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range |
| Size |
7.62 x 12.95 x 4.78 cm (3.0 x 5.1 x 1.88 inches) |
| Weight |
267.4 g (9.43 oz) |
| Environmental Rating |
IP50 |
 |
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). |
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