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ESL-100 Hand-held LED Strobe

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The ESL-100 has been replaced by the new and improved ESL-200. Please click here to view the new model

ESL-100"The brightest, hand held, fully featured LED stroboscope in a compact design. The ESL-100 series LED stroboscope is designed to measure the speed of rotating or cycling linear motion objects without contact or reflective tape, as well as freeze motion visually. Lifetime LED lights using pulse width modulation, encased in an aluminum housing, and powered by a NiMH rechargeable battery, make this pocket strobe extremely durable and capable of high flash rates. The ESL-100 is an ideal inspection strobe for for speed, motion and vibration analysis, such as rotating shafts, fans, cams, etc.

AdjustableAdjustable Flash Duration
For most applications standard flash duration works without adjustment. For utra high rpm or larger objects rotating with high surface speed, ESL-100 features adjustable flash duration.
For ultra high speed applications, objects may move during the brief period of a single flash, resulting in a blurred image. By decreasing flash duration, objects have less time to move and the image will appear sharper.


  • High efficiency LED solid-state light source – never needs replacement like traditional xenon lamps.
  • Extended battery life of 10 hours continuous use at 6,000 fpm/rpm
  • Pulse Width Modulation for sharp images at high speed
  • Highly stable drift free operation
  • Auto wide measuring range – up to 120,000 fpm/rpm (over 100,000 display flashes)
  • Push button operation with x2 and ÷2 buttons for easy and precise adjustment
  • 359° Digital phase shift adjustment by 1° increments
  • Store up to 19 flash rates in memory for records or quick retests (Restarts at the last flash rate)
  • Includes NIST Traceable Calibration Cert
  • ET-1 External Trigger Kit is optionally available includes external sensor and AC-Adapter for auto synchronization of strobe

Related Products

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

Light Output (LUX) vs Distance

light output
at 30 cm Distance, 6000 flashes/min (FPM)


Complete Kit

The ESL-100 is supplied in foam-fitted carrying case with LED Stroboscope, AC-Adapter/Charger, instruction manual and NIST-Traceable Calibration Certificate.


Measuring Range6.0 - 120,000 fpm/rpm
Resolution±0.1 fpm/rpm (6.0 to 9999.9 fpm/rpm)
±1 fpm/rpm (10000 to 120000 fpm/rpm)
Accuracy±0.007%, ±1 LSD
Display12mm high, 5digit LCD
Light Source96 LED Array, never needs replacement
Brightness350 Lux brightness (measured at 6000 fpm at a distance of 50 cm)
PowerNiMH Rechargeable battery
Battery Life10 hours (@ 6,000 rpm when fully charged)
Charge Time6 Hours with overcharge protection
Operating Temp32° to 113° F (0 to 45° C)
Weight1.2 lb/540g
Housing MaterialAluminum
Tripod Mount1/4-20 UNC on backside
Phase Shift0-359° in 1° increments
Flashrate AdjustCOARSE: press "x2" or "÷2"
FINE: press "v" or "^"
Synchronous OutputNPN Open collector 30V, 10mA max., 100 µs pulse width
Synchronous InputLow level: 0~0.8VDC, High level: 2.5-30VDC, or use with NPN open colector output, 50 µs minimum pulse width, negative edge trigger
Warranty2 years

Optional ET-1 External Trigger Kit

Optional ET-1 External Trigger Kit The External Trigger immediately synchronizes the stroboscope with a rotating object. The sensor is aimed at a ferrous target mounted on the drive shaft and triggers the strobe to flash each time the target passes the sensor. ET-1 is complete with sensor, cables and AC adapter. Ferrous target not-included.
Target Material Ferrous material
Target Size 4mm dia. (minimum)
Sensing Distance 3mm (based on 10 mm dia. target)
Max Speed 50 m/min (using 10mm dia. target)
Max Frequency 1 KHz
Sensor size 12 mm dia. x 45 mm; M12 connector
Cable Length 1.8 m (6')
Power AC adapter (up to 240VAC)


Buy Now

Item Description Price
Spare / Replacement Ni-Mh Rechargeable Battery for ESL-100
Padded-vinyl & leather belt-clip holster
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.