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Quick Details

  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: ShowRange
  • Model Number: SRDL322

Packaging & Delivery

Packaging Details Carton

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USB Temperature and Humidity Data Logger SRDL320 & SRDL322



This data logger measures and stores up to 32,000 humidity(0 to 100%RH) and temperature(-35 to 80°C(-31~176°F)) readings. Dew point and more professional applications can be provided by the PC software DGraphTM. Logger status, alarm
indication and low battery indication are via flashing red/green LED and yellow LED. The button on housing can be used to start logging, or confirm and clear LED alarm when LED alarm is hold status.
User can plug data logger straight into PC’s USB port without any cables. Before getting started, user need to install USB driver and DGraphTM software, provided on the CD which is included in product packing box. All the software can run under Windows XP, Vista, 7 or 8(32 bit and 64 bit Versions). User can easily use DGraphTM software to setup sample rate (from 10 seconds to 12 hours), high/low alarm limit and start/stop method , and download data to PC, etc. And then user can view, analyze and print the data, or export other file formats (txt, xsl, csv, bmp, jpg).
Especially, for some professional applications, user can set access password, name each channel, enable/disable specified channel, input calibration data for each channel, disable LED indication for saving power, and select sample mode (Instant,
Average, Maximum and Minimum), etc.


This data logger is used mainly to monitor and verify humidity& temperature-sensitive goods, equipment or areas. e.g.:

Shipping, Computer Rooms, Libraries, Food, Communications Equipment, HVAC,
Pharmaceutical, Containers, Refrigeration, Warehouse, Aircraft Cabins, Agriculture and Livestock, Museums, Equipment Run Time, Greenhouses, Buildings, Laboratories, Environmental and Weather Monitoring


1, USB interface directly communicate with PC for setup and data download
2, User can set access password for data logger
3, User can name each channel and enable/disable specified channel freely
4, LED alarm enable/disable, LED alarm hold enable/ disable and alarm limit settings for all channels via DGraphTM
5, User can input formula to customize compound graph from selected logging data
6, User can create and customize new unit easily and freely for all measurement parameters
7, Logging status indication via red/green LED and battery status indication via yellow LED
8, Start logging method: Immediately, Button, Delayed
9, User can input two point calibration value for each channel when setup
10, Dew point calculated via software DGraphTM
11, IP66 environmental protection
12, Replaceable lithium battery and logged data are not lost if battery exhausted







Measurement range

-35~80°C (-31~176°F)

Accuracy (Typ.)

+/- 0.3°C (+/- 0.5°F)

Resolution (Typ.)

0.1°C (0.2°F)

Relative Humidity


Measurement range


Accuracy (Typ.)

+/- 3%RH

Resolution (Typ.)





Memory Capacity

64Kbytes (Total 32,000 readings for all channels)

Sample Rate

User selectable from once every 10 seconds to once every 12 hours

PC Software

DGraphTM software and USB driver required (Included on CD)

Power Supply

User replaceable 1/2AA 3.6V Lithium Battery, 1200mAh

Battery Life

Approx. 2 Years @ 1 Minute

Sample Rate

Approx. 4 Years @ 10 Minute

Sample Rate

Approx. 8 Years without any

sample task

NOTE: It also Depends on ambient temperatures and using of LEDs

Case Material



123mm * 37mm * 23mm

(4.8" * 1.5" * 0.9")


Approx. 90 grams(3.19 oz)


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