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DT-900 Digital Portable Stroboscope

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30 - 12,500 RPM/FPM and higher using harmonics

DT-900 Portable Strobe is designed for non-contact RPM measurements and inspecting moving parts by "freezing" or "slowing down" the action.

The DT-900 requires only one hand to operate, yet delivers performance comparable to much larger and heavier "pistol-grip" type models.

The DT-900 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.

The DT-900 Techstrobe series is offered in various configurations to fit the exact needs of the user. Models include DT-900-U, DT-900-TR , DT-900-UT, DT-900-PR and DT-900-UP. Refer to the BUY NOW section below for complete details and prices.

Also known as SKF TMRS and SMS-400B
NSN 6220-01-572-0758 (DT-900)


  • Easy to use with just one hand.
  • The changeable NiMH battery powers the stroboscope 1-2,5 hours.
  • "LOW BAT"appears in the display if the energy becomes less.
  • NIST-Traceable calibration certificate & test report optionally available
  • Resolution of 0.1 Flashes per minute.
  • Universal Battery Charger is supplied on "-U", "-UT" and "-UP" versions for use anywhere Worldwide on 100-265 VAC

Complete Kit

The DT-900 is supplied as a complete kit including stroboscope, rechargeable battery pack, battery charger with exchangeable plugs, spare flash tube, operation manual, carrying case with foam insert and space for additional rechargeable battery


Flash Range30 - 12,500 fpm
Accuracy± 0.01%
Resolution0.1 fpm
Operation modesFlashes with internal trigger
Flashes with external trigger Tachometer
Display8 digits, 15 mm high
FlashtubeXenon 10 W / white 6500 K
Flash Duration10 - 15 µs / approx. 400 lux
Flash life100 mill. flashes
Phase Adjustment5° per increment
Input signal0.25 - 983.3 Hz
Output signal0.667 - 108.333 Hz
External trigger5 V TTL Signal
Power100-240 V DC quick-change battery
Tripod mounting1/4 - 20unc, length 8 mm
Weight1.4lb (620 g)
Temperature range50 - 95 °F (10 - 35 °C)
Dimensions9.6" x 2.6" x 3.1" (24.5 cm x 6.5 cm x 8 cm)
Warranty1 years
Country of OriginCanada


Buy Now

Item Description Price
Strobe with (1) battery and Universal battery charger. WITHOUT carrying case - Please contact us for pricing and availability.
Strobe with (1) battery and Universal battery charger. WITH carrying case
Strobe Kit with (1) battery, (1) spare flash tube, holster & Universal battery charger in carrying case
Strobe kit with (2) batteries, (1) spare flashtube, holster & Universal battery charger in carrying case
DT-900-TR is no longer available, Purchase DT-900-UT
DT-900-PR is no longer available, Purchase DT-900-UP
Spare battery for DT-900
Spare Flash Tube for DT-900 - FLASHTUBE900, FT-900, SMS-908, SMS-400B
Universal Battery Charger for DT-900 100-240V
Spare Carrying Case for DT-900
NIST Traceable Calibration Certificate
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.