Description
Features
Sensor Features
- High accuracy: ± 0.2°C (± 0.36°F) and ± 2.5% RH
- Robust RH sensor withstands extended use in high-humidity environments
Wireless Features
- 900 MHz wireless mesh self-healing technology
- 450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops
- Up to 50 wireless sensors or 336 data channels per HOBO RX station
- Simple button-push to join the HOBOnet wireless network
- Onboard memory to ensure no data loss
- Powered by rechargeable AA batteries and built-in solar panel
Specifications
Temperature Sensor
Measurement Range;
-
-40°C to 75°C-40°F to 167°F
Accuracy;
-
±0.25°C from -40° to 0°C±0.45°F from -40° to 32°F±0.20°C from 0° to 70°C±0.36°F from 32° to 158°F±0.25°C from 70° to 75°C±0.45°F from 158° to 167°F
Resolution;
-
0.02°C0.036°F
Drift;
-
<0.01°C per year0.018°F per year
Response Time (typical, to 90% of change);
-
With RS3-B solar radiation shield: 6 minutes, 30 seconds in air moving 1 m/sec
RH Sensor
Measurement Range;
-
0–100% RH at -40° to 75°C (-40° to 167°F); exposure to conditions below -20°C (-4°F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1%
Accuracy;
-
±2.5% from 10% to 90% RH typical to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical
Resolution; 0.01% RH
Drift; <1% per year typical
Response Time (typical, to 90% of change);
-
With RS3-B solar radiation shield: 30 seconds in air moving 1 m/sec
Wireless Mote
Operating Temperature Range;
-
-25° to 60°C with rechargeable batteries-13° to 140°F with rechargeable batteries-40° to 70°C with lithium batteries-40° to 158°F with lithium batteries
Radio Power;
-
12.6 mW non-adjustable+11 dBm non-adjustable
Transmission Range;
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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-THC-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;
-
Up to 50 wireless sensors or 336 data channels per one HOBO RX station
Logging Rate; 1 minute to 18 hours
Number of Data Channels; 3
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°Csee Deployment and Mounting), operation outside this range will reduce the battery service life
Memory; 16 MB
Dimensions; Cable length: 2 m (6.56 ft)
Weight Sensor and cable: 110 g (3.88 oz);
Materials Mote: PCPBT, silicone rubber seal
Environmental Rating; Mote IP67, NEMA 6
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