External dimensions (L x W x H) 

53 x 39 x 11 mm

Size of the LCD display 

14 x 12 mm

Weight 

18 g

Storage temperature (inactive) 

-30 °C to +60 °C -22 °F to +140 °F

Operating temperature  

-30 °C to +55 °C  -22 °F to +131 °F

(Display visible) 

-10 °C to +55 °C +14 °F to +131 °F

Alarm temperature range 

-25 °C to +50 °C, in 0.1 °C increments -13 °F to +122 °F

Alarm limits 

up to 4 individually programmable alarm limits

Alarm time 

1 minute to 20 days

Temperature 

measurement interval every minute

Accuracy of temperature  

+/- 0.5 °C typ. (-5 °C to +30 °C), +/- 0.6 °C (beyond this range) measurement

+/- 1.0 °F typ. (+23 °F to +86 °F), +/- 1.1 °F (beyond this range)

Measurement accuracy of the time 

+/- 30 minutes / year

Calibration 

every device is calibrated/NIST traceable

Protection class 

IP64

Operating lifetime and shelf life 

up to 5 years – expiry date printed on label

Activation and stopping 

START/STOP button

Manipulation 

Q-tag® Quad cannot be manipulated or reset without destroying it