We Checkline Europe B.V. would like to use cookies and similar technologies in order to optimize your shopping experience and this requires your consent. By clicking on the "Accept cookies" button you agree to our use of cookies and similar technologies. If you do not agree, you can refuse the use or customize settings for the respective cookies by clicking on the button "Cookie Settings".You also have the possibility to specify that only certain cookies, which we use on our website, should be activated. This banner will be displayed until you have selected your cookie preferences. If you decide against the use of cookies, we will not use cookies nor similar technologies, except those that are essential for the proper functioning of the website. Click here for our privacy policy

QB-LED Portable Battery powered LED Stroboscope

Made in GermanyThe hand-held, battery-powered Check-Line QB-LED is a stroboscope featuring 40 extremely luminous LEDs for the highest light output in its class.

It has been designed specifically for machinery observation, visual inspection and motion analysis and its robust design is suitable for use in the toughest industrial environments.

The QB-LED features a sturdy aluminum housing fitted with forty long-life, high performance LEDs providing a peak brightness of 5000 Lux and a user-friendly adjustment of the flash duration, to select the optimal balance of brightness and image sharpness.
The built-in Lithium Ion battery provides up to seven hours of continuous use on a single charge.

It is easy-to-use, as functions such as flash rate and brightness adjustments are separated from the special functions that are found in a separate menu. The special functions include phase shift, internal/external trigger selection, flash delay, divider and "Slow Motion" mode. "Slow Motion" mode allows the user to offset the flash rate to put the "frozen" image into virtual "slow-motion".

The QB-LED uses the "strobe effect" whereby when the flash rate is equal to the rotational speed, the target will appear "frozen".

Typical applications include: motion and vibration analysis, balancing of rotating shafts, fans, cams, high speed motion analysis of speakers or ink-jet printing and more. Ideal for use in the textile, paper making, sheet metal production, automotive and printing industries.


  • 40 High Power LEDs produce 5000 Lux Peak Brightness
  • Selectable units of "FPM, "Hz" or "1/MIN"
  • "Slow Motion" mode allows user to offset the flash rate to put the "frozen" image into "slow-motion" (External Trigger Mode only)
  • Additional features include "Phase Shift" and Internal/External Trigger
  • Rugged, lightweight aluminum housing with an ergonomic handle, convenient operator controls and backlit LCD display
  • Supplied with a universal AC battery charger. Can also be used to continuously power the QB-LED for fixed-mounted use
  • Built-In Litihum-Ion battery provides up to seven hours of continuous operation on a single charge. Battery status is shown on LCD display
  • Flash range of 30 - 300,000 fpm (0.5-5000 Hz) with user-selected units of Hz or FPM (Flashes Per Minute)
  • "PRO Mode" provides additional functions including Multiplier, Delay and Memory (5 User-set Values)
  • Adjustable flash duration allows for optimal tuning of brightness and image sharpness for every application
  • CE Certified with 1-Year Warranty
  • Traceable Calibration Certificate included

Complete Kit

The QB-LED is supplied as a complete kit including:

  • QB-LED stroboscope,
  • Removable handle,
  • Universal AC adapter with USA, EURO and UK plugs,
  • DIN connector (for use when externally triggering from sensor),
  • Calibration certificate
  • Instruction manual with Quick-Start Guide

All supplied in a foam-fitted plastic carrying case.

Related Products

QBS-LED Portable Battery powered LED Stroboscope

  • Built-In Laser Light Source provides a Non-Contact "Tachometer Mode" when used in combination with reflective tape
  • 118 High Power LEDs produce 10000 Lux Peak Brightness
  • Threaded mounting holes for fixed mount applications

More details

QBS-LED Portable Battery powered LED Stroboscope

DS-2000LED LED Stroboscope

  • Produces the brightest flash and sharpest image over the entire range to
  • NIST-Traceable Calibration Certificate provided

More details

DS-2000LED LED Stroboscope

LS-9-LED LED Fixed-Mount Linear Stroboscope

  • Extremely bright and uniform light distribution over an area of 300 x 500mm (12" x 20")

More details

LS-9-LED LED Fixed-Mount Linear Stroboscope


Category Stroboscope Accessories

More details

Category  Stroboscope Accessories 0

LS-EP Rubber Edge Protectors for LS-3-LED, QB-LED & QBS-LED

  • Edge protection in a set of 2 for mounting on the LS-3-LED, QB-LED & QBS-LED stroboscopes.

More details

LS-EP Rubber Edge Protectors for LS-3-LED, QB-LED & QBS-LED 127408

Light Output (LUX) vs Distance

Light Output (LUX) vs Distance
  At 20 cm Distance, 6000 flashes/min (FPM)

Number of LEDs40 High Power LEDs
Flash Rate30 - 300,000 FPM (0.5 - 5000 Hz)
Flash DurationAdjustable (1 usec up to 2000 usec)
Accuracy± 0.02% (± 1-digit/±0.025usec)
Resolution± 0.1 FPM (30 - 999) ± 1 FPM (1000 - 9999) ± 10 FPM (10,000-300,000)
Brightness5000 Lux @ 6000 FPM / 30cm (12 inch) - and 3° Sharpness
DisplayLCD, multiple lines
CertificationCE (as per EU norms)
Flash ColorApprox. 5,000 - 8000 K
PowerBuilt-In Lithium-Ion rechargeable battery, 3100 mAh
Housing MaterialAluminum
Dimensions150 x 130 x 112 mm / 6 x 5.1 x 4.4 inch
Weight1 Kg (2.2 Lbs)
Temperature Range0° - 40° C / 32° - 104° F
Battery LifeApprox 7 hours at (@875 Lux) approx 4 hours at 2000 Lux
Recharging Time5,6 hours
Housing ProtectionIP30
Mounting Holes1x 1/4"-20UNC (in center) 2x M5 Threaded Holes (60 mm c:c)
Trigger Input Signal3...30 V / max. 5 mA (Isolated optocoupler) DIN 41524 5-pin standard plug Uout = 24V DC, 60 mA switchable trigger input
Trigger OutputNot available
Warranty1 year
Default SettingsFREQUENCY=1000 FPM, BRIGHT=1°/166usec, PHASE=0, TRIGGER=INT, Display Units=FPM, Multiplier=x1, Bright Units=deg, Delay=0msec, Divider=1, Slow=0, Trigger=0(rising)


Buy Now

QB-LED - Portable Battery powered LED Stroboscope with 40 High-Powered LEDs
€ 1.070,00 

LS-EP - Rubber Edge Protectors for LS-3-LED, QB-LED & QBS-LED
€ 83,00 
QB-BAT - Rechargeable Lithium-Ion Battery Pack for QB-LED & QBS-LED
€ 112,50 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability: Available: 1 - 3 days, Delivery time: 1 - 3 weeks, special order request

Request offer
Checkline Europe
Your information request is sent!
We'll contact you as soon as possible.