A Bluetooth ORP/temperature tester designed with the everyday user in mind. This tester pairs with Jenco’s free ORP Bluetooth iOS or Android app to provide the simplest way to accurately measure ORP and temperature readings.

  • Measures ORP and temperature
  • Customized measurement setting
  • Reading quality indicator
  • Saves readings with time-date stamp and GPS mapping (pro app)
  • Data sharing (pro app)
  • Displays calibration history (pro app)
  • IP67
  • CE, FCC, IC, NCC complaint.
  • RoHS complaint
  • Two AAA batteries to ensure long battery life
  • Low battery indicator
  • Auto shutoff

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Easy to use and powerful

Simplicity of testers paired with the usefulness of apps.

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Built for daily use and for repeatable results

IP67 waterproof housing protects accurate water quality circuitry.

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Part of a six model series

pH, ORP, conductivity, salinity, TDS, all with temperature measurements.
See specifications

Pro and basic apps

Dual display with temperature, save readings with GPS (pro app ), calibration history (pro app ) and more…

See complete feature set

Easy to use and powerful

Dig Deeper Into Your Readings

Displays ORP readings with temperature and other key information

View past calibration results

Customize measurement settings to suit your needs

Built for Daily Use and for Repeatable Results

Water-proof housing protects specialized circuitry and electrode modules.

  • 1

    IP67 housing

  • 2

    One-button operation

  • 3

    Bluetooth indicator

  • 4

    Bluetooth Low Energy

  • 5

    High Resolution and accuracy design

  • 6

    AAA Batteries

  • 7

    Long eletrode useful life

  • 8

    Reverse cap

Save Time With Data Logging and Sharing

Simplified Operation

Easy to follow, guided calibration

ORP650B S1
ORP650B S2
ORP650B S3
ORP650B S4
ORP650B S5


Product Slide 1

Jenco ORP650B

  • Parameters

    ORP & Temp
  • Range

    ± 1000mV
  • Resolution

  • Accuracy

    ± 1% F.S.
  • Temp Range

    0.0~50.0°C (32 .0~122.0°F)
  • Temp Resolution

    0.1°C / 0.2°F
  • Temp Accuracy

    ±0.5°C / ±1°F
  • Input Impedance

  • TDS Factor

  • Electrode

    Gel-filled, single junction
  • Battery Life

  • FCC ID

  • NCC ID

  • ICES-003

    CAN ICES-003(B) / NMB-003(B)
Product Slide 1


Basic vs Pro

Basic Edition

* Display primary measurement and temperature

* Display battery life

* Guided calibration

*Customize displays and reading

Pro Edition

* All features of the Basic Edition

* Save readings with GPS information

* Share saved readings to other apps

* View calibration history

Documentation and Apps