HOBO TEROS 11 US – Soil Moisture/Temperature Sensor, US Version
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HOBO TEROS 11 US - Soil Moisture/Temperature Sensor, US Version Specs
| Measurement Range* | 0.00 to 0.70 mł/mł in mineral soils |
| Accuracy | ą0.030 mł/mł (ą3%) typical from 0 to 50°C (32 to 122°F); ą0.020 mł/mł (ą2%) with soil specific calibration |
| Resolution | 0.001 mł/mł |
| Dielectric Measurement Frequency | 70 MHz |
| Measurement Range | -40 to 60°C (-40 to 140°F) |
| Accuracy | ą1.0°C (1.8°F) from -40 to 0°C (-40 to 32°F) ą0.5°C (0.9°F) from 0 to 60°C (32 to 140°F) |
| Resolution | 0.1°C (0.18°F) |
| Operating Temperature Range | Sensor: -40 to 60°C (-40 to 140°F) Mote: -25° to 60°C (-13° to 140°F) with rechargeable batteries -40 to 70°C (-40 to 158°F) with lithium batteries |
| Radio Power | 12.6 mW (+11 dBm) non-adjustable |
| Transmission Range | Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high |
| Wireless Data Standard | IEEE 802.15.4 |
| Radio Operating Frequencies | RXW-T11-900: 904–924 MHz RXW-T11-868: 866.5 MHz RXW-T11-921: 921 MHz RXW-T11-922: 916–924 MHz |
| Modulation Employed | OQPSK (Offset Quadrature Phase Shift Keying) |
| Data Rate | Up to 250 kbps, non-adjustable |
| Duty Cycle | <1% |
| Maximum Number of Motes | 50 motes per one HOBOnet Wireless Sensor Network |
| Battery Type/Power Source | Two AA 1.2V rechargeable NiMH batteries, powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F) |
| Battery Life | With NiMH batteries: Typical 3–5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (see Mounting and Positioning the Mote), operation outside this range will reduce the battery service life With lithium batteries: 1 year, typical use |
| Memory | 16 MB |
| Dimensions | Sensor: 7.47 x 9.4 x 2.39 cm (2.94 x 3.7 x 0.94 inches) Sensor needle length: 5.4 cm (2.13 inches) Sensor needle diameter: 0.32 cm (0.13 inches) Cable length: 5 m (16.4 ft) Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) |
| Weight | RXW-T11-xxx sensor and cable: 245 g (8.64 oz) Mote: 223 g (7.87 oz) |
| Materials | Sensor: ASA plastic body with polyurethane epoxy filling and stainless steel pins Cable: PVC, UV resistant and rodent repellent Mote: PCPBT, silicone rubber seal |
| Environmental Rating | Mote: IP67, NEMA 6 |
| Compliance Marks | Federal Communication Commission RXW-T11-900 European Union Compliance RXW-T11-868 Taiwan Compliance RXW-T11-921 Australia and New Zealand Complicance RXW-T11-922 |
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