Equip your team with precision handheld diagnostic tools for stop-motion inspection and RPM measurement.
Our Products
LED Stroboscope for RPM Measurement and Motion Analysis
The LabStrobe II is a rechargeable handheld LED stroboscope for non-contact RPM measurement, stop-motion inspection, and mechanical motion analysis. For an accurate reading, select a clear focal point on the rotating fan or machine component. Use an existing mark or apply a high-contrast sticker or tape, then adjust the flash rate until that single focal point appears completely frozen.
With an operating range of 60 to 99,990 flashes per minute, LabStrobe helps engineers and maintenance teams inspect fans, pumps, compressors, conveyors, textile equipment, and other moving systems in the lab or out in the field.
Rechargeable for Lab and Field Use
The LabStrobe runs on a built-in rechargeable battery, so it goes wherever you do.
Precise Digital Flash Rate Control
Dial in your flash frequency with accurate digital controls to freeze motion at exact speeds.
Wide Flash Rate Range
The LabStrobe covers a broad operating range to handle 60 to 99,990 flashes per minute, for everything from slow-moving mechanical systems to high-speed rotating equipment.
LabStrobe Stroboscopes
How the LabStrobe Measures RPM
A stroboscope measures speed by flashing light at an adjustable frequency until a rotating or reciprocating component appears stationary.
For an accurate reading:
Identify a Focal Point
Select a distinct mark on the rotating fan or machine component. If no clear mark exists, place a high-contrast sticker or tape on the part.
Adjust the Flash Rate
Increase or decrease the flash frequency until the focal point appears as one completely frozen image.
Find the Highest Harmonic
Confirm that the image is single, not doubled or multiplied, at the highest flash rate where it remains still. That reading represents the machine’s true operating speed.
Watch for Speed Drift
If the machine speed fluctuates, the focal point may drift or shift rather than remain perfectly stationary.
For the Most Accurate RPM Reading
Choose a distinct focal point before adjusting the flash rate. Use an existing mark or apply a high-contrast sticker or tape so you can confirm a single, stationary image and avoid harmonic misreadings.
LabStrobe Technical Specs
| Specification | Detail |
|---|---|
| Product Name | LabStrobe II |
| Model or Part Number | STB200-F |
| Light Source | LED |
| Flash Range | 60 to 99,990 FPM |
| Measurement Method | Non-Contact |
| Power Source | Rechargeable Lithium Battery |
| Battery Runtime | 20 Hours (Bright mode) / 36 Hours (Sharp mode) |
| Charging Method | Via Micro-USB |
| Display Type | 5-Digit LED Display |
| Accuracy | ±1 LSD (60 – 17,300 FPM) | ±0.009% (17,300 – 99,990 FPM) |
| Resolution | 1 FPM (60 – 17,300 FPM) | 2–5 FPM (17,300 – 99,990 FPM) |
| Operating Modes | Bright and Sharp |
| Tripod Compatibility | Compatible with Standard 1/4"-20 UNC Threads |
| Included Accessories | Charger Cord Included |
| Warranty | 2-Year Warranty |
See the LabStrobe in Action
Watch Video
LabStrobe Stroboscopes
LabStrobe Applications
You can utilize the LabStrobe across a wide range of industries and equipment types, anywhere rotating or reciprocating motion needs to be measured or inspected without stopping the machine:
Fans & Blowers
Commercial, HVAC, Industrial Exhaust, and Device Cooling Applications
Pumps
Motor Speed Verification for Pump Controls and Variable Flow Systems
Compressors
Variable Speed Compressor Inspection and Heat Pump Applications
Conveyors and Production Equipment
Brushed DC and BLDC Motion Control Verification
Lifts and Motion Systems
Closed-loop Speed Confirmation Where Precision Matters
Textile looms
Measure Speed of Looms for Clothing, Tire Production, and More
LabStrobe Stroboscopes
Why Use LabStrobe?
Non-Contact Speed Measurement
You can verify RPM without stopping the machine or touching any moving parts. Keep operations running while you diagnose.
Spot Problems That Other Methods Miss
When you use its slow-motion visual analysis, the LabStrobe can detect wear, misalignment, and vibration patterns that other sensors and meters simply can’t.
Built for Real Work Environments
Compact, handheld, and rechargeable, the LabStrobe is designed to move with you.
Developed for Engineers, by Engineers
The LabStrobe was developed in-house by Control Resources, the same team that has been designing and manufacturing power-electronic controls since 1984.
About Us
By Engineers, For Engineers
Over three decades ago, an electrical engineer left a secure corporate career to pursue an idea. After three patents, Warren Kundert’s SmartFan® fan speed controller became reality and the basis for a full design-to-build operation serving OEMs across the country. Today, with 400+ custom designs and a manufacturing facility in Massachusetts, Control Resources is still solving the problems no mass manufactured boards can touch.
Insights
Engineering Resources
Engineering insights, product updates, and resources to help with your next project.
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One Board, 70+ Integrations: How Heatco and CRI Consolidated Five+ Controls into One
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CRI Design Guide: Fractional HP VFDs
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CRI Design Guide: Brushless Motor Controllers
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CRI SmartFan® Applications
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SmartFan® Installation Tips
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I2C Communications Tips
I2C Communications Tips
Device Cooling Design Tips
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Thermal Design for ATCA Systems: Compliance, Interfaces, and Fan Tray Architecture
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SmartFan Integration: The Case for Adaptive Cooling
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AC Motor Compatibility
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Fan Controller Technology and Motor Efficiency
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Work With Us
If your current control is holding your product back, or you’re starting from scratch and need a partner who’ll see it through, let’s dig into the details together. Reach out to the team and we’ll take it from there.
Frequently Asked Questions
Answers About LabStrobe Stroboscopes
How Does an LED Stroboscope Measure RPM?
An LED stroboscope flashes light at an adjustable frequency until a rotating or repeating component appears stationary. Before taking a reading, select a clear focal point on the equipment, either an existing mark or a high-contrast sticker or tape. Adjust the flash rate until that single focal point appears completely frozen at the highest possible flash speed. The corresponding flash rate represents the operating RPM.
What Is the LabStrobe II Measurement Range?
The LabStrobe II operates from 60 to 99,990 flashes per minute, supporting inspection of slow-moving systems and high-speed rotating equipment.
Can LabStrobe Measure RPM Without Touching the Equipment?
Yes. LabStrobe uses controlled flashes of LED light to visually freeze rotating or reciprocating motion, allowing operators to verify speed without contacting moving components.
Is a Stroboscope the Same as a Strobe Light?
Both produce repeated flashes, but an industrial stroboscope is a measurement and inspection instrument. It provides controlled flash-frequency adjustment for speed verification and motion analysis, while entertainment strobe lights are designed for visual effects.
What Is the Difference Between a Stroboscope and a Tachometer?
A tachometer typically provides a numerical speed reading through contact or reflected light. A stroboscope also lets you visually inspect the moving component, making it useful for observing alignment, surface defects, belt movement, and other mechanical behavior.
Can a Stroboscope Show the Wrong RPM?
Yes. A rotating object can appear stationary at a multiple or fraction of its true speed, which can lead to an incorrect reading. Use a clear focal point on the rotating component and confirm that it appears as one single image, not doubled or multiplied, at the highest flash rate where it remains still. If the machine speed fluctuates, the focal point may drift slightly instead of staying perfectly stationary.
What Equipment Can I Inspect With LabStrobe?
LabStrobe can be used with visible rotating or reciprocating equipment, including fans, blowers, pumps, compressors, conveyors, lifts, textile machinery, shafts, belts, and pulleys.
Does the Equipment Need to Be Stopped Before Using LabStrobe?
No. LabStrobe is designed for non-contact inspection while equipment is operating. Users should still follow all machine-guarding and workplace safety procedures.
How Long Does the LabStrobe II Battery Last?
The LabStrobe run about 20 hrs (Bright mode) / 36 hrs (Sharp mode).
Where Can I Buy the LabStrobe II?
The LabStrobe II is available through the purchase link on this page. For product questions, availability, or ordering support, contact Control Resources directly.
