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Industrial vibration
intelligence.

A WiFi vibration sensor small enough to fit anywhere, smart enough to tell you exactly where to add a balance weight. No laptop. No app. Just your browser.

GrayVolt WiFi vibration sensor

Magnitude — linear

1× RPM 134.0 Hz Peak 134.0 Hz Amp 0.350 g
6.66
kHz Sample Rate
60,000
Max RPM
< 5
Min Setup
±16
g Sensor Range

Two tools. One platform.

Start with the Analyzer and upgrade to full balancing capability anytime — same hardware, just add the tach sensor and unlock the firmware.

Most Popular
Vibration Analyzer

Real-time vibration monitoring with FFT spectrum analysis. Mount, connect, and see what your machine is telling you — instantly on your phone.

  • 6-axis IMU — 3-axis accelerometer + gyroscope
  • Real-time FFT spectrum display
  • WiFi captive portal — no app download
  • Temperature monitoring (built-in)
  • RGB status LED
  • Magnetic mount + adhesive tape included
  • Upgradable to Spindle Balancer
$99 one-time purchase
Prefer Amazon? Buy there instead ↗
New
Spindle Balancer

Everything in the Analyzer, plus integrated tachometer and automatic balancing algorithm. Tells you exactly how much weight to add and where.

  • Everything in the Vibration Analyzer
  • Integrated IR tachometer sensor
  • Automatic influence coefficient balancing
  • Sub-2.5 mm/s residual imbalance achievable
  • Phase accuracy ±2–3°
  • Includes tach sensor + 3.5mm cable
$199 one-time / complete kit
Amazon — coming soon

The whole workflow, in motion.

From first boot to a balanced spindle — every step runs right in your phone's browser. No installs, no desktop software.

Set upJoin WiFi and choose Analyzer or Balancer mode — under a minute.
AnalyzeLive FFT, ISO 10816 severity and bearing-fault screening at a glance.
BalanceGuided single-plane balancing — the exact correction weight & angle.
FleetLive status across every device you own, on one screen.

Three steps. Five minutes.

No laptop, no drivers, no software installation. Just a phone with a browser.

01
Mount

Stick the magnetic sensor on the spindle housing. Mark the shaft with a sharpie for the tach reference. Plug in USB-C power.

02
Connect

Open your phone's WiFi settings. Connect to "GV-XXXX". Your browser opens automatically with the measurement dashboard.

03
Measure

Start the spindle. Vibration data streams live. The Balancer edition tells you exactly where to add weight and how much. Done.

The questions
we get every day.

Still unsure? Talk to an engineer →

No. The sensor hosts its own WiFi network and serves the measurement dashboard through your phone's or tablet's built-in browser via a captive portal. Works on iOS, Android, Windows, macOS — anything with WiFi and a browser.

The sensor reads once-per-revolution vibration amplitude and phase via the IR tach. The web UI then uses the classic influence-coefficient method to tell you how much trim weight to add, and at what angular position, to cancel the measured imbalance. Results depend on your setup and machine.

Yes. The hardware is identical. Buy the $100 Upgrade Kit — it ships with the IR tach sensor, 3.5mm cable, and a firmware unlock code. Enter the code in the web UI and balancing unlocks instantly.

Any rotating machine where an IMU can pick up once-per-rev signal. We've tested up to 24,000 RPM; the hardware's IMU bandwidth extends the theoretical ceiling well beyond that, but we're not making tested claims past 24k until we've run them.

Entirely local by default. The sensor streams to your phone over its own WiFi — no internet connection required, no data leaves your network. An optional MQTT export lets you push readings to your own server if you want historical trending.

A strong magnet in the base is the fastest option for ferrous housings. For aluminum or plastic, 3M VHB adhesive strips are included. With the Balancer kit we recommend mounting on a dial-indicator magnetic base — the V-block bottom clamps onto round spindle housings and the magnet holds the sensor steady through a balancing run.

The tach sensor has an 8 mm shank — ideal for a dial-indicator magnetic base. Clamp the shank in the base, position the IR eye toward a sharpie mark on the rotating shaft, and lock it down. The mag base holds rigidly on any ferrous surface and lets you fine-adjust aim without tools. A bold sharpie line on the shaft is all the tach needs for a clean trigger — no reflective tape required.

Stop guessing.
Start measuring.

Free shipping. 30-day return policy.