HOBOnet Wireless Temperature Sensor

Product Options
NO-RADIO-FREQUENCY-SELECTED

Overview

The HOBOnet Wireless Temperature Sensor provides a cost-effective and scalable solution for web-enabled monitoring of air, soil, and water temperatures. HOBOnet Wireless Sensors communicate data directly to the HOBO RX3000 or the HOBO MicroRX station, or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset’s innovative cloud-based software platform.

Manufactured by: Onset
Model: HOBOnet Wireless Temperature Sensor

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance
  • IoT Cloud Compatible

Applications

Air temperature
Soil temperature
Temperature
Water temperature

Specification

Sensor
Measurement Range -40° to 100°C (-40° to 212°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: 2 minutes, 30 seconds in air moving 1 m/sec
With RS3-B solar radiation shield: 5 minutes 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-TMB-900: 904–924 MHz
RXW-TMB-868: 866.5 MHz
RXW-TMB-921: 921 MHz
RXW-TMB-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 2
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)
Memory 16 MB
Dimensions Sensor: 5.3 x 33 mm (0.2 x 1.3 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 Sensor and cable: 82.5 g (2.91 oz)
Mote: 223 g (7.87 oz)
Materials Sensor: Stainless steel waterproof tip
Mote: PCPBT, silicone rubber seal
Environmental Rating Sensor and cable: Immersion in water up to 50°C (122°F) for 1 year
Mote: IP67, NEMA 6

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