Plott PRL900H Series
Rotary Lasers The Connected
Dial in slope from 100 feet away. Control grade on both axes from your phone. Get alerted the instant the laser moves. The PRL900HT is what happens when a working rotary laser meets a smartphone.
Grade Control You Run
From Your Phone.
Most rotary lasers give you a beam and a remote. The PRL900HT gives you a connected instrument you can run from 100 feet away. Set your X and Y slope from your phone. Save your grade presets. Get an alert on your screen the instant the laser moves. One person can run the whole operation.
Plott designed the PRL900HT for grade contractors who are done walking back to the instrument. Built-in Bluetooth, a free app, and dual-axis slope control that you dial in by typing a number — not by spinning a knob and hoping. This is precision work, done the way contractors actually work.
One Laser. Two Beams. Same Performance.
Red or green — the PRL900HT delivers the same Bluetooth dual-slope capability in both. Pick based on your site conditions.
The red beam workhorse. Same full Bluetooth dual-slope capability as the G — app control, X+Y grade, HI Alert, 2,000-foot range. Red beam works great indoors, in low-light conditions, and on jobs where beam visibility isn't the challenge. The PRD-900R detector handles outdoor detection work when the beam isn't visible.
Green beam is 4x more visible than red — you see it in lit interiors and bright outdoor conditions without hunting. Same Bluetooth dual-slope app, same 2,000-foot range, same HI Alert. Add green visibility and you've got the most capable version of an already capable laser.
What Makes the PRL900HT Different
Six capabilities that separate the Plott rotary laser from everything else on the site.
Free Plott app. Run the laser from anywhere on site. Change speed, adjust slope, toggle scan angles, manage HI Alert — all from your phone. Download once, pair once, control everything.
Type your grade percentage into the app. Hit go. The laser physically tilts to your angle on both axes simultaneously. Up to 8% grade. Save presets for your most-used slopes — load them on the next job in seconds.
If something moves the instrument, the sensor detects it instantly, alerts your phone, and the laser re-levels before anyone shoots a bad reading. On a busy site, this prevents costly grade errors from a bumped tripod.
Set from the app or instrument buttons. Slow 300 RPM for close-range indoor work. Fast 1,200 RPM for maximum detector response at distance. Pick the right speed for the job without touching the laser.
Isolate beam zones on multi-laser sites so detectors don't cross-read. Set sector angle from the app in seconds. Four preset sweep angles — full rotation or targeted arc, your call.
The PRL900 series supports autonomous calibration at authorized service centers. Back to factory spec in approximately 30 minutes, on-site. Not weeks at a service center — back to work the same day.
Red vs. Green — At a Glance
Same Bluetooth dual-slope platform. One choice: beam color.
| Feature | PRL900HT-R | PRL900HT-G |
|---|---|---|
| Preferred Use | Preferred Exterior Open sites, grade work, earthwork, sunlight | Preferred Interior Lit environments, warehouses, interior layout |
| Beam Color | Red | Green |
| Best Application | Primarily Outdoor Grade work, earthwork, open sites | Primarily Indoor Interior layout, lit environments |
| Beam Wavelength | 635–650 nm | Optimized Green |
| Beam Visibility | Standard | 4× More Visible |
| Detector Included | PRD-900R | PRD-900G |
| Bluetooth App Control | ✓ Free App | ✓ Free App |
| Dual Slope (X+Y) | ✓ Up to 8% | ✓ Up to 8% |
| App Control Range | 100 Ft | 100 Ft |
| Working Range | 2,000 Ft Dia. | 2,000 Ft Dia. |
| Accuracy | 1/16" @ 100 Ft | 1/16" @ 100 Ft |
| Battery Life | 20 Hours | 20 Hours |
| Rotation Speeds | 300/600/1,200 RPM | 300/600/1,200 RPM |
| Scan Modes | 0°/15°/45°/90° | 0°/15°/45°/90° |
| HI Alert Bump Sensor | ✓ Included | ✓ Included |
| Vertical Bracket | — | ✓ Included |
| SKU | PLO PRL900HT-R | PLO PRL900HT-G |
Add a Tripod & Grade Rod — Ship Ready to Work
The PRL900HT-R kits include everything you need to start working on day one. Contractor-grade aluminum tripod, your choice of grade rod measurement system — Inches or Tenths.
PRL900HT Series — Full Configuration Chart
Click any column header to sort. Use the filter buttons to show only what you need.
| Model ↕ | Beam ↕ | Tripod ↕ | Grade Rod ↕ | Measurement ↕ | Price ↕ | |
|---|---|---|---|---|---|---|
| PRL900HT-R | Red | — | — | — | $999 | Shop → |
| PRL900HT-G | Green | — | — | — | $999 | Shop → |
| PRL900HT-R-K1 | Red | ✓ Included | ✓ Included | Tenths | $1,195 | Shop → |
| PRL900HT-R-K2 | Red | ✓ Included | ✓ Included | Inches | $1,195 | Shop → |