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PK2X Pocket Stroboscope

Made in Germany
Click images to enlarge.
Flash Range: 30 - 12,500 RPM/FPM

The PK2X hand-held Pocket Strobe® is convenient and accurate device to perform non-contact RPM measurements on rotating or reciprocating parts or components as well as a proven means for inspection of moving parts/machinery by “freezing” or “slowing down” the action. This stroboscopic effect is accomplished by matching the flash rate of the stroboscope with the repetitive rate (RPM) of motion of the target. A slow motion effect is accomplished with a slight mismatch of the relative speeds.

The PK2X is powered by a rechargeable internal battery or directly from an AC power source allowing for continuous use if necessary, or continued use when the battery charge is low. It small size, lightweight design makes it perfect for use by field technicians or maintenance personnel.

The new PK2X offer significant improvements from the previous generation model PK2 including the following (refer to table below): • 50% improvement in flash brightness • 100% improvement in battery run-time • Doubles the choice of power by permitting operation during re-charge or continuous operation when connected to AC-power

This new model continues to offer the highest reliability, refined by over 10-years of continuous design & manufacturing improvements since the introduction of the original Pocket Strobe Model PK1 was introduced in 1996.

The PK2X requires only one hand to operate, yet delivers performance comparable to much larger and heavier “pistol-grip” type models. It is ideal for industrial, laboratory, R&D and academic environments. Its small size and excellent performance provide superior convenience and value — at a reasonable price.

Also known as Rolux, Testo 476


  • Includes DAkkS Traceable Certificate of Inspection
  • NIST-Traceable Calibration Certification with data is optional
  • Internal rechargeable Lithium Ion battery uses latest "smart-charge" technology for longest possible life and 2-Hour run-time on a single charge
  • Bright XENON flash intensity (over 1200 Lux) with life of 200 million flashes
  • Optional frequency output signal provided on PK2X-OT
  • Accepts input from sensor for external flash triggering
  • Provided with a threaded insert on underside of strobe for mounting to articulating arm or other fixture
  • Operates when being recharged or run continuously via AC-power
  • Universal (100 – 240V AC) AC-Adapter/Charger can be used anywhere worldwide
  • Portable, lightweight and rugged construction
  • Resolution of ±1 RPM over the entire range with highly accurate speed control and drift-free operation
  • 1-Year Warranty

Complete Kit

Includes Stroboscope, Universal AC-Adapter/Charger (with plug adapters provided for North America, Europe, UK & AU), external input jack, Traceable Calibration Certificate and instruction manual, all supplied in a hard shell carrying case.

Optional Accessories

Click here for Stroboscope Accessories
PK2X-TBE Spare Xenon Flash Tube
PK2-HLT Padded-vinyl & leather belt-clip holster
PK2-PHONO Connection jack for external
trigger input signal
PK2-TRI Telescoping tripod
PK2-BNC External triggering cable; 6 ft. long;
1/8" male to BNC male connections
PK2-8M External triggering cable; 6 ft. long;
1/8" male to 1/8" male connections
PK2X-BAT Replacement Li-Ion Battery Pack
PK2X-AC-BC Replacement Universal Battery Charger (100-240 VAC)

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



Flash Range30 - 12,500 FPM
Flash Brightness1200 Lux (8"/20cm distance @ 4500 fpm)
Accuracy± 0.01% over entire range + 1 LSD
± 0.04 Hz
Resolution± 1 FPM over entire range
Display5-digit LCD
Display Update0.5 seconds
Flash Energy170 mJ
Flash Duration< 9 µs
Flash Tube Life200 million flashes (at 6,000 fpm)
Flash Color Temp6,000K - 6500K
External Trigger5 volt, DTL/TTL compatible 1/8" jack
Optional* Trigger Signal Output5 volt, DTL/TTL compatible 1/8" jack
* on PK2X-OT Model Only
Operating TimeBattery, 2 hours
AC-Power, continuous
Battery TypeLithium Ion (Li-Ion) 7.2V, 22.32 Wh / 3.1 Ah
Battery ChargerAC Power Required, 100-240 VAC, 50/60 Hz
DC-Output, 9 VDC @ 2000 mA max
Charging Time, 4-5 hours
Overcharge ProtectionYes
CE CertificationYes
Weight0.9 lbs (415 grams) including battery
Housing MaterialHigh Impact ABS Plastic
Reflector MaterialAluminum
Tripod Mount1/4-20, female insert
Operating Temp.32 to 104° F (0 to 40° C)
Dimensions9-3/4" x 2-3/4" x 1-3/4"
240 x 65 x 40 mm
Warranty1 year


Buy Now

Item Description Price
Pocket Stroboscope Complete Kit
Pocket Stroboscope with Frequency Output option, Complete Kit
NIST Traceable Calibration Certificate
ISO-17025 Certificate for Tachometer or Stroboscope
Xenon Flash Tube for PK2X Stroboscope (not for PK1 or PK2)
Holster for PK2X Stroboscope, with belt clip
Lithium Ion Battery Pack for PK2X Stroboscope
Replacement Universal AC-Adapter/Charger (100-240 VAC)
Connection jack for external trigger input signal
Telescoping tripod
Tripod for Tachometers and Stroboscopes
External triggering cable; 6 ft. long; 1/8 in. male to BNC male connections
External triggering cable; 6 ft. long; 1/8 in. male to 1/8 in. male connectionsExternal triggering cable; 6 ft. long; 1/8 in. male to 1/8 in. male con
Lens/Bezel Assembly for PK2X Stroboscope
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.
*NOTE PK2X-TBE, PK2X-BAT, PK2X-AC-BC are NOT compatible with the PK2 or PK1, for accessories and spare parts for older models, please click here.