Quick Answer
What is the Topcon RC-402?
See also: Topcon LS-80L Laser Receiver
See also: Spectra Precision HL760 Receiver
The Topcon RC-402 is a wireless laser receiver that combines laser plane detection with a built-in remote control for the Topcon RL-H5A laser, enabling one-person operation of the laser from the grade rod position.
Topcon RC-402 — Complete Specs, Manual & Guide
Category: Wireless Laser Receiver | Brand: Topcon | Model: RC-402
The Topcon RC-402 combines a laser receiver with a wireless remote control transmitter for the Topcon RL-H5A rotating laser. This allows a single operator to set up the laser, then move to the grade rod and remotely adjust the laser elevation without returning to the instrument. The RC-402 also provides the standard LED grade indication and digital output for automatic blade control systems.
Topcon RC-402 Full Specifications
| Detection accuracy | ±1mm |
| Detection band height | 100mm |
| Detection range | Up to 400m radius from laser |
| Wireless remote range | Up to 200m to RL-H5A laser |
| Remote functions | Laser elevation up/down, RPM speed, power on/off |
| Display | LED bar with above/below/on-grade indication |
| Mounting | 25mm rod clamp bracket |
| Power supply | 4× AA batteries |
| Battery life | Up to 250 hours |
| Operating temperature | -20°C to +50°C |
| IP rating | IP54 |
Compatible Lasers
- Topcon RL-H5A — Full wireless remote control capability
- Topcon RL-H4C — Detection only (no wireless remote control)
- Other 635nm rotating lasers — Detection only mode
Frequently Asked Questions — Topcon RC-402
How does the RC-402 wireless remote work?
The RC-402 includes a radio transmitter that communicates with the Topcon RL-H5A laser's built-in wireless receiver. From the rod position, the operator can press the up/down buttons on the RC-402 to remotely adjust the laser's elevation, reducing the need to walk back to the laser instrument during layout work.
Can the RC-402 be used for automatic machine blade control?
Yes. The RC-402 provides the same digital grade control output as Topcon's standard LS-80L receiver, making it compatible with automatic blade control systems. The wireless remote function is an added convenience on top of standard receiver functionality.
What is the wireless remote range of the RC-402?
The RC-402 wireless remote operates effectively up to 200m from the RL-H5A laser under clear line-of-sight conditions. On open construction sites this is typically sufficient for most layout setups. Obstacles, metal structures, or radio interference can reduce effective range.
Is the RC-402 waterproof?
The RC-402 carries an IP54 rating, meaning it is splash-resistant and dustproof but not submersible. It handles typical construction site weather (rain, mud spray, dust) reliably but should not be submerged or pressure-washed.
Related models: Topcon LS-80L | Spectra HL760
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