InTemp CX405 Bluetooth Low Energy, Ultra Low Temperature Data Logger

SKU: CX405

The InTemp CX405 data logger is specifically designed for ultra-low temperature monitoring of vaccines, pharmaceuticals in storage, sample that need ultra low temperature and transportation environments. The logger uses Bluetooth Low Energy (BLE) technology for communication. The CX405 has a built-in 1.5 m external probe that can measure temperatures as low as -95°C and up to 50°C  with a high degree of accuracy. The device also has a protective sheath to prevent accidental cutting of the probe cable and includes a clip for secure mounting.

Product Features:

• Two-point NIST Certificate of Calibration (probe only), good for one year
• Integrates with mobile and cloud platforms for a 21 CFR Part 11 compliant solution
• Easy logger setup and data download in seconds
• Advanced audible and visual alarm capabilities for notification of temperature excursions
• LCD display with current and daily min/max temperatures
• Protective, anti-cut cable sheath
• User-replaceable AAA batteries to guard against local power loss
• Built to FDA, USP, EU, and WHO standards
• Free InTemp mobile app to configure logger, view data, and access the free InTempConnect cloud software service
• Real-time alerts and automatic data downloads with optional CX5000 Gateway device



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

Time Accuracy

±1 minute per month at 25°C (77°F)

Battery Type

Two AAA 1.5 V alkaline or lithium batteries, user replaceable

Battery Life

1 year, typical with logging interval of 1 minute. Faster logging intervals, remaining connected with the app, excessive report generation, numerous audible alarms, and paging all impact battery life.


128 KB (75,245 total measurements or 37,622 probe & internal paired measurements)

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 Compliant

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


Built in

Compliance Marks

FCC Australia/New Zealand General Compliance mark


Include together


-95° to 50°C (-139° to 122°F)


±1.5°C from -95° to -40°C (±2.7°F from -139° to -40°F)
±1.0°C from -40° to -10°C (±1.8°F from -40° to 14°F)
±0.5°C from -10° to 50°C (±0.9°F from -14° to 122°F)


0.05°C at 25°C (0.09°F at 77°F)

NIST Calibration

Two-point NIST calibration, probe only

Cable Length

1.5 m (4.92 ft)

Probe Dimensions

Food-grade stainless steel probe with blunt tip, 31.75 mm (1.25 inches) long, 4.78 mm (0.188 inches) diameter

Intemp 405 Data Sheet


Intemp 405 Quick Start Guide


Intemp 405 Manual