:: Product Information


Data Loggers

Highlighted Features

  • Compact size for easy deployment

  • Weatherproof IP66 enclosure for harsh environments

  • Direct USB offload--no need for an adapter cable

  • Includes five smart sensor inputs

  • Hinged door and integrated mounting tabs

  • Runs for up to a year on four standard AA batteries

  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis

  • This data logger operates in indoor and outdoor environments.

The H21-USB data logger supports the following measurements: 4-20mA, Amp Hour (Ah), Barometric Pressure, DC Voltage, Kilowatt Hours (kWh), Leaf Wetness, Light Intensity, Power Factor (PF), Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Temperature, Volt-Amp Reactive, Volt-Amp Reactive hour, Volt-Amps (VA), Water Flow, Watt Hours (Wh), Watts (W) and Wind


Operating Range                                         -20° to 50°C (-4° to 122°F) with alkaline batteries

                                                                     -40 to 70°C (-40 to 158°F) with lithium batteries 

Smart Sensor Connectors                            5

Smart Sensor Network Cable Length           100 m (328 ft) maximum

Logging Interval                                           1 second to 18 hours

Start Modes                                                  Immediate, at interval, push button, or delayed start

Memory Modes                                             Stop when full or wrap when full

Memory                                                         512 KB nonvolatile flash data storage

Time Accuracy                                              0 to 2 seconds for the first data point and ±5 seconds per week at 25°C (77°F)

Battery Type                                                 Four AA 1.5 V alkaline batteries for operating conditions of -20° to 50°C (-4° to 122°F); four AA 1.5 V lithium                                                                                                                        batteries for operating conditions of -40 to 70°C (-40 to 158°F)

Battery Life                                                   1 year, typical use (up to five sensors with 1 minute or greater logging interval)

Communication Type                                    USB 2.0 interface

Full Memory Download Time                         4 minutes

Enclosure Access                                         Hinged door secured by one latch with eyelet for use with user-supplied padlock

Materials                                                       Outer enclosure: Polycarbonate/PBT blend with stainless steel hinge pins; Gaskets: Silicone rubber;Cable channel: EPDM rubber

Dimensions                                                  17.04 x 11.94 x 4.47 cm (6.71 x 4.70 x 1.76 in.) see diagrams in manual

                                                                    Padlock hole diameter: 0.58 cm (0.23 in.)

Weight                                                         414g (14.6 oz.)

Environmental Rating                                  Weatherproof enclosure, NEMA 4X and IP66 

The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).

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Dianjiang Group Limited
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Tel: (852) 3690 1588   Fax: (852) 3690 1586
Email: Dianjiang_HK@yahoo.com.hk   Hongkong@Dianjiangtech.com
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