Description
Temperature Sensor |
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| Measurement Range |
0° to 50°C(32° to 122°F)
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| 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)
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| Resolution |
0.02°C(0.036°F)
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| Drift |
<0.01°C per year(0.018°F per year)
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| Response Time (typical, to 90% of change) |
With RS3-B solar radiation shield: 6 minutes, 30 seconds in air moving 1 m/sec
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RH Sensor* |
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| 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%
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| 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
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| Resolution |
0.01% RH
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| Drift |
<1% per year typical
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| Response Time (typical, to 90% of change) |
With RS3-B solar radiation shield: 30 seconds in air moving 1 m/sec
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Wireless Mote |
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| 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)
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| Radio Power |
12.6 mW non-adjustable(+11 dBm non-adjustable)
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| Transmission Range |
Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high
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| Wireless Data Standard |
IEEE 802.15.4
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| Radio Operating Frequencies |
RXW-THC-922: 916–924 MHz
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| Modulation Employed |
OQPSK (Offset Quadrature Phase Shift Keying)
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| Data Rate |
Up to 250 kbps, non-adjustable
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| Duty Cycle |
<1%
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| Maximum Number of Motes |
Up to 50 wireless sensors or 336 data channels per one HOBO RX station
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| Logging Rate |
1 minute to 18 hours
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| Number of Data Channels |
3
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| 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)
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| Battery life |
With NiMH batteries: Typical 3–5 years when operated in the temperature range -20° to 40°C
(see Deployment and Mounting), operation outside this range will reduce the battery service life)
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| Memory |
16 MB
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| Dimensions |
Cable length: 2 m (6.56 ft)
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| Weight |
Sensor and cable: 110 g (3.88 oz);
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| Materials |
Mote: PCPBT, silicone rubber seal
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| Environmental Rating | Mote: IP67, NEMA 6 | ||||
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