Part Number - CX403

InTemp Bluetooth Ambient Temperature Data Logger

$129.00 USD
Wireless, NIST-certified temperature data logger with internal sensor

Important Information

For automatic downloads and remote alerts, InTemp loggers require the optional InTemp CX Gateway. MORE INFORMATION


The InTemp CX403 data logger features an internal sensor for monitoring ambient temperature. Communicating wirelessly via Bluetooth to mobile devices, this logger features a built-in LCD display to view ambient temperature, advanced audible and visual alarm capabilities to notify of temperature excursions, and a NIST Certification of Calibration.

With the optional CX Gateway, you can get remote notifications of temperature excursions and automatically download data from loggers within range of the device. Learn more about the CX Gateway.

Learn more about our compatible mobile and cloud solutions:


InTempConnect A cloud-based data command-center control for monitoring all loggers throughout your global supply chain

InTemp App A free mobile app that streamlines logger configuration and readout, and automatically uploads reports to InTempConnect

InTempVerify A free mobile app that manages user permissions and the activation of data downloads by anyone—anywhere, anytime


Who is this for?
Required to follow GDP & GMP requirements, specifically.


 CX403 Features 

  • Internal sensor only (No probe)
  • GDP/GMP compliant
  • Refrigerated to ambient monitoring
  • Integrates with mobile and cloud platforms for a 21 CFR Part 11 compliant solution
  • Easy-to-read display with current and daily min/max temperatures
  • Bluetooth transmission of data and alarm states
  • Logger setup and download of data in seconds – without a PC or cable
  • Real-time alerts and automatic data downloads with optional CX Gateway device
  • +/- 0.5C accuracy for reliable temperature readings
  • Battery-powered to guard against local power loss



Ambient Temperature Sensor

-30° to 70°C
-22° to 158°F
±0.5°C from -15° to 70°C
±0.9°F from 5° to 158°F
±1.0°C from -30° to -15°C
±1.8°F from -22° to 5°
0.024°C at 25°C
0.04°F at 77°F
NIST Calibration
Single point NIST calibration


Radio Power
1 mW (0 dBm)
Transmission Range
Approximately 30.5 m (100 ft) line-of-sight
Wireless Data Standard
Bluetooth Low Energy (Bluetooth Smart)
Logger Operating Range
-30° to 70°C
-22° to 158°F
0 to 95% RH (non-condensing)
Logging Rate
1 second to 18 hours
Battery Type
Two AAA batteries, user replaceable
Battery Life
1 year, typical with logging interval of 1 minute. Faster logging intervals, remaining connected with the InTemp app, excessive report generation, numerous audible alarms, and paging all impact battery life.
128 KB (84,650 measurements, maximum)
Full Memory Download Time
Approximately 60 seconds; may take longer the farther the device is from the logger
LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range
9.4 x 4.5 x 2.59 cm
3.7 x 1.77 x 1.02 inches
90.2 g
3.18 oz
Environmental Rating
CE Compliance Mark
FCC Compliance Mark
Australia New Zealand Compliance Mark
Japanese Telecom Compliance Mark

Passed RTCA DO160G, part 21H

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$285.00 USD


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