HOBOnet Temp/RH Sensor -- RXW-THC-xxx

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 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

In what environment does this operate?

This operates in an outdoor environment.

What measurements does this support?

The supports the following measurements: Dew Point, Evapotranspiration, Relative Humidity and Temperature

Temp 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 100°C (±0.45°F from 158° to 212°F)"
• Resolution: 0.02°C (0.036°F)
• Drift: <0.01°C (0.018°F) per year
• "Response Time (typical, to 90% of change): Without solar radiation shield: 3 minutes, 45 seconds in air moving 1 m/sec 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): Without solar radiation shield: 15 seconds in air moving 1 m/sec With RS3-B solar radiation shield: 30 seconds in air moving 1 m/sec"



Wireless Mote

• "Operating Temperature Range: -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-THC-900: 904–924 MHz RXW-THC-868: 866.5 MHz RXW-THC-921: 921 MHz 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: 50 motes per one RX Wireless Sensor Network
• "Battery Type/ Power Source: Two AA 1.2 V 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 Deployment and Mounting), operation outside this range will reduce the battery service life With lithium batteries: 1 year, typical use "
• Memory: 16 MB
• "Dimensions: Sensor: 5.1 x 33 mm (0.2 x 1.3 inches) Cable length: 2 m (6.56 ft) Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)"
• "Weight: Sensor and cable: 110 g (3.88 oz); Mote: 223 g (7.87 oz)"
• "Materials: Sensor: Polyamide Mote: PCPBT, silicone rubber seal"
• Environmental Rating: Sensor: Weatherproof: 0 to 100% RH intermittent condensing environments. For best results, the sensor should be mounted inside a protective enclosure, such as a solar radiation shield. Mote: IP67, NEMA
• "Compliance Marks: Federal Communication Commission RXW-THC-900 European Union Compliance RXW-THC-868 Taiwan NCC Mark RXW-THC-921 Australia and New Zealand Complicance RXW-THC-922"

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• User's Manual ｜ get
• Quick Start ｜ get