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Easy, Wireless Collection of Temperature and Humidity – the Ideal Logger for Managing Production Plants and Agricultural Sites




Hioki Memory HiLoggers are high-speed data loggers for recording multiple channels of voltage, temperature, resistance or humidity signals, some models providing complete isolation between channels and strong noise resistance. The Hioki LR8514 Wireless Humidity Logger provides easy, wireless collection of temperature and humidity data, and is the ideal tool for managing the environmental condition of production plants and agricultural sites.

LR8514 2 ch, sensor is sold separately

Note: The LR8514 alone is not capable of making measurements. Only the temperature and humidity sensors affect the measurement accuracy and are subject to calibration. The LR8514 logger does not require calibration. Bluetooth® is a trademark of Bluetooth SIG, Inc. and licensed for use by HIOKI E.E. CORPORATION.


Key Features

• High-precision, ±3% RH humidity sensor

• Convenient for simultaneously recording and comparing temperature and humidity readings at 2 locations

• Compact, two-channel model fits where other devices don’t

• Download measurement data to a tablet or computer with Bluetooth® wireless technology or capture in real time with the LR8410

• Three-way power (AC adapter, AA alkaline batteries, or external 5 to 13.5 V power supply)

• Store 500,000 data points per channel

Basic specifications

Supported instrument  

[Used as standalone product (Data collected manually) ]
Windows PC or Windows tablet (CD-R with software included)
Android smartphone or Android tablet terminal
(Software can be downloaded free of charge from Google Play.)
*Communication range varies with the performance of the computer or tablet (up to a line-of-sight distance of roughly 30 m)
[Used as logging module (Real-time measurement) ]
Device can be used as an LR8410 logging module to record and display data in real time and to control up to 7 units, Communication distance: 30 m


Number of channels


2 ch for temperature + 2 ch for humidity
(2 sensors can be attached)


Measurement items


Temperature, Humidity


Measurable Range


[Temperature] -40 ˚C to 80 ˚C, Range 100˚C f.s., Max. resolution 0.1˚C
[Humidity] 0%rh to 100%rh, Range 100% rh f.s., Max. resolution 0.1%rh


Measurement accuracy (using Z2010/Z2011)


[Temperature basic accuracy] ±0.5 ˚C(10 ˚C to 60 ˚C)
*If outside above temperature range:
Add 0.015 ˚C/ ˚C (-40 ˚C to 10 ˚C) or 0.02˚ C/ ˚C (60 ˚C to 80 ˚C)
[Humidity basic accuracy] ±3% rh (20 ˚C to 30 ˚C, 20% to 90% rh)


Display items


Measurement value, date, time, number of recorded data, maximum value, minimum value, and average value




Alarm, Scaling, Recording operation hold function, Erroneous operation prevention, Comment recording function, Power saving function, Authentication function, Free run




[Capacity] 500,000 data items for each channel [Mode] Instantaneous value [Interval] 0.5 to 30 sec, 1 to 60 min, 14 selections


Power source


AC ADAPTER Z2003 (AC100 V to 240 V, 50 Hz/60 Hz), AA alkaline batteries (LR6) ×2, External power DC5 V to 13.5 V (can also be supplied from USB bus power, with a conversion cable)


Continuous operating time ([Capacity] 500,000 data items for each channel) (23˚C)


3.5 months (Recording interval of 1 min, Bluetooth® OFF)
20 days (Recording interval of 1 sec, Bluetooth® ON)
5 days (Recording interval of 0.5 sec, during real-time measurement with the LR8410)


Dimensions, Weight


85W×61H×31D mm (3.35W×2.40H×1.22D in),95 g (Not including the battery)




CD-R ×1 (Instruction Manual, Logger Utility, Wireless Logger Collector) , Measurement Guide ×1, Caution for Using Radio Waves × 1, AA alkaline batteries (LR6) ×2

Data can be downloaded using Hioki’s tablet and smartphone app (for Android devices).

Search for “HIOKI” and download the Wireless Logger Collector!



QR Code link to Hioki’s Android app*

Scan this QR Code with an Android device to access the Google Play download page directly *QR Code is a registered trademark of Denso Wave Incorporated.

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