Orders Over $100 Ship Free. Enter Promo Code "SHIPFREE" for free UPS Ground Shipping at Checkout. (USA Only)

QB-LED Battery Powered LED Stroboscope Peak Brightness of 5,000 LUX
40 High-Powered LEDs

Made in Germany
Click images to enlarge.
Flash range of 30 - 300,000 fpm (0.5-5000 Hz)

The Check-Line QB-LED is a hand-held, battery-powered stroboscope featuring forty (40) extremely bright LEDs for the highest light output in its class. Designed for machinery observation, visual inspection and motion analysis, its robust design is suitable for use in the toughest industrial environments.

The QB-LED features a robust aluminum housing fitted with forty long-life, high performance LEDs providing a peak brightness of 5000 Lux and convenient adjustment of flash duration to easily select the optimal balance of brightness and image sharpness. A built-in Lithium Ion battery provides up to seven hours of continuous use on a single charge. It is supplied with a universal battery charger (100-240VAC) with USA, Euro and UK plug adapters.

The strobe is extremely easy-to-use, as functions such as flash rate and brightness adjustments are separated from the special functions that are found 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
  • Flash range of 30 - 300,000 fpm (0.5-5000 Hz) with user-selected units of Hz or FPM (Flashes Per Minute)
  • Selectable units of "FPM, "Hz" or "1/MIN"
  • Backlit LCD Display for optimum viewing in all lighting conditions
  • "Slow Motion" Mode allows user to offset the flash rate to put the "frozen" image into "slow-motion" (External Trigger Mode only)
  • "PRO Mode" provides additonal functions including Multiplier, Delay and Memory (5 User-set Values)
  • Additional features include "Phase Shift" and Internal/External Trigger
  • Built-In Litium-Ion battery provides up to seven hours of continuous operation on a single charge. Battery status is shown on LCD display
  • Adjustable flash duration allows for optimal tuning of brightness and image sharpness for every application
  • Traceable Calibration Certificate included
  • Supplied with universal AC battery charger. Can also be used to continuously power the QB-LED for fixed-mounted use
  • Threaded mounting holes for fixed mount applications
  • Rugged, lightweight aluminum housing with an ergonomic handle, convenient operator controls and backlit LCD display
  • CE Certified with 1-Year Warranty

Related Products

QBS-LED Stroboscope
Click image for more info
Battery Powered LED Stroboscope Peak Brightness of 10,000 LUX
118 High-Powered LEDs
- 118 High Power LEDs produce 10000 Lux Peak Brightness
- Built-In Laser Light Source provides a Non-Contact "Tachometer Mode" when used in combination with reflective tape
- "Auto-Sync" feature uses the Laser Tach Mode to instantly "freeze" rotating target without any adjustment
DS-2000LED LED Stroboscope
Click image for more info
LED Stroboscope - Splashproof
- Produces the brightest flash and sharpest image over the entire range to 300,000 FPM
- Lifetime LEDs do not wear-out or need replacement
Click image for more info
LED Inspection Stroboscope
120 LEDs in 15 x 8 array
- Extremely bright and uniform light distribution over an area of 300 x 500mm (12" x 20")
- Uses 120 of the newest generation LEDs in a 15 x 8 array providing 7500 Lux, peak
ls-18-led stroboscope
Click image for more info
LED Inspection Stroboscope
200 LEDs in 25 x 8 array
- Light intensity of 9000 Lux peak from 200 LEDs
Screw-On Handle for LS-3-LED, QB-LED & QBS-LED
Click image for more info
Screw-On Handle for LS-3-LED, QB-LED & QBS-LED

Complete Kit

The QB-LED is supplied as a complete kit including the strobe, removable handle, universal AC adapter with USA, EURO and UK plugs, DIN Connector (for use when externally triggering from sensor), traceable calibration certificate and instruction manual with Quick-Start Guide -- all supplied in a foam-fitted plastic carrying case.


Number of LEDs40 in a 5 x 8 array
Flash Range30 - 300,000 FPM (0.5 - 5000Hz)
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, Miltiplier=x1, Bright Units=deg, Delay=0msec, Divider=1, Slow=0, Trigger=0(rising)


Buy Now

Item Description Price
Portable, Battery Powered LED Stroboscope Kit
Rechargeable Lithium-Ion Battery Pack for QB-LED & QBS-LED
Replacement Universal AC-Adapter/Charger (100-240 VAC)
Screw-On Handle for LS-3-LED, QB-LED & QBS-LED
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.