| General Specifications |
| Temperature Sensor (MX1104) |
| Range |
-20° to 70°C (-4° to 158°F) |
| Accuracy |
±0.20°C from 0° to 50°C (±0.36°F from 32° to 122°F) |
| Resolution |
0.002°C at 25°C (0.004°F at 77°F) |
| Drift |
<0.1°C (0.18°F) per year |
| RH Sensor* (MX1104) |
| Range |
0% to 100% at -20° to 70°C (-4° to 158°F); exposure to conditions above 95% may temporarily increase the maximum RH sensor error by an additional 1% |
| Accuracy |
±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical |
| Resolution |
0.01% |
| Drift |
<1% per year typical |
| Response Time (MX1104) |
| Temperature |
11 minutes in air moving 1 m/s (2.2 mph) |
| RH |
30 seconds to 90% in airflow of 1 m/s (2.2 mph) |
| Light Sensor (M1104) |
| Range |
0 to 167,731 lux (15,582 lum/ft2) |
| Accuracy |
±10% typical for direct sunlight (see Light Measurement on page 4 for more details) |
| Logger with Cable Type |
SD-MA-420 or CABLE-4-20mA |
SD-VOLT-2.5 or CABLE-2.5-STEREO |
SD-VOLT-05 or CABLEADAP5 |
SD-VOLT-10 or CABLE-ADAP10 |
SD-VOLT-24 or CABLE-ADAP24 |
| Measurement Range |
0 to 20.1 mA |
0 to 2.5 V |
0 to 5.0 V |
0 to 10 V |
0 to 24 V |
| Accuracy |
±0.001 mA ±0.2% of reading |
±0.1 mV ±0.1% of reading |
±0.2 mV ±0.3% of reading |
±0.4 mV ±0.3% of reading |
±1.0 mV ±0.3% of reading |
| Resolution |
0.3 µA |
40 µV |
80 µV |
160 µV |
384 µV |
| Logger |
| Operating Range |
-20° to 70°C (-4° to 158°F) |
| Radio Power |
1 mW (0 dBm) |
| Transmission Range |
Approximately 30.5 m (100 ft) line-of-sight |
| Wireless Data Standard |
Bluetooth Low Energy (Bluetooth Smart) |
| 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 |
| Restart Mode |
Push button |
| Time Accuracy |
±1 minute per month at 25°C (77°F) |
| Battery Type |
Two AAA 1.5 V alkaline batteries, user replaceable |
| Battery Life |
1 year, typical with logging interval of 1 minute and Bluetooth Always On enabled; 2 years, typical with logging interval of 1 minute and Bluetooth Always On disabled; and temperatures between 0° and 50°C (32° and 122°F). Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
| Memory |
4 MB (1.9 million measurements, maximum) |
| Full Memory Download Time |
Approximately 4 to 15 minutes depending on the mobile device; 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 |
11.28 x 5.41 x 2.92 cm (4.44 x 2.13 x 1.15 in.) |
| Weight |
123 g (4.34 oz) |
| Environmental Rating |
IP54 |
| CE |
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). |