Temperature and humidity sensor HOBOnet network with solar cell RXW-THC-868

The RXW-THC-868 is one sensor wireless solar energy that works with the system HOBOnet to monitor the air temperature and the'relative humidity.
The HOBOnet wireless sensors communicate the data directly to the HOBO RX3000 or at the station HOBO MicroRX, or transmit data via other wireless sensors to the central station.
They are preconfigured and ready for deployment, and data are accessible via HOBOlink, the software platform cloud innovative'Onset.

Technical characteristics of the sensor:

- High accuracy: ± 0.2 °C (± 0.36 °F) and ± 2.5 per cent RH
- The robust HR sensor resists prolonged use in very humid environments
- Wireless features
- 900 MHz wireless mesh self-healing technology
- Wireless range from 450 to 600 metres (1,500 to 2,000 feet) and up to five jumps
- Up to 50 wireless sensors or 336 data channels per HOBO RX station
- Just press a button to join the HOBOnet wireless network
- Onboard memory to avoid data loss
- Powered by rechargeable AA batteries and integrated solar panel

Additional features of the temperature sensor:

- Measuring 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°C (0.036°F)
- Drive: - Response time (typical, 90% of change)
- With RS3-B sunscreen: 6 minutes, 30 seconds in the air moving at 1 m/sec

Additional features of HR sensor:

Measurement range: 0 to 100% RH at -40 °C at 75 °C (-40 °C at 167 °F); exposure to conditions below -20 °C (-4 °F) or above 95% relative humidity may temporarily increase the maximum error of the additional 1% relative humidity sensor
- Accuracy: ±2.5 % from 10 % to 90 % RH typical up to a maximum of ±3.5 % including hysteresis at 25 °C (77 °F); less than 10 % and more than 90 % ± 5 % typical
- Resolution: 0.01% HR
- Drive: - Response time (typical, 90% of change)
- With RS3-B sunscreen: 30 seconds in the air moving at 1 m/sec

Additional features of the wireless sensor:

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 not adjustable (+11 dBm not adjustable)
-Transmission range: reliable connection to a 609.6 m (2,000 ft) to 3 m (10 ft) high sight line
- Wireless data standard: IEEE 802.15.4
- Radio operating frequencies RXW-THC-922: 916–924 MHz
- Modulation employed: OQPSK (decalation of modulation by quadrature phase displacement)
- Data flow rate: up to 250 kbps, not adjustable
- Service cycle: - Maximum number of points: up to 50 wireless sensors or 336 data channels per HOBO RX station
- Log rate: 1 minute at 6 p.m
- Number of data channels: 3
- Type of battery/power source:
2 rechargeable NiMH batteries AA 1.2 V, powered by an integrated solar panel
or
2 AA 1.5 V lithium batteries for operating conditions from -40° to 70°C (-40° to 158°F)
- Battery life:
With NiMH batteries : 3 to 5 years in case of use in the temperature range from -20 °C to 40 °C see Deployment and mounting), operation outside this range will reduce battery life
- Memory: 16 MB
- Cable length: 2 m (6.56 feet)
- Sensor and cable weight: 110 g (3.88 oz)
- Materials : PPCBT, silicone rubber seal
- Environmental assessment: IP67, NEMA 6