The Ultimate Guide to the NB-WPT-X5 Wireless Probe

  • I Why a Probe Is Essential for CNC Machining?

In CNC machining, accurately setting your tool offsets is critical for achieving high-quality results. Manual tool setting is not only slow but also prone to error—especially when you frequently change tools or run multi-step jobs. Even tiny mistakes can accumulate, affecting both efficiency and consistency.

A probe automates the process, quickly measuring tool length and setting work offsets with precision. This saves time and ensures a stable, reliable workflow every time.

For anyone who values speed and accuracy, a probe is an essential accessory. The NB-WPT-X5 Wireless Probe is designed for high reliability, effortless operation, and flexible tool setting—making it an ideal choice for modern CNC machining.

  • Types of Probes: Wired vs. Wireless

1.Wired Probe

Traditional wired solutions connect directly to the controller via a cable. They are simple in design, cost-effective, and suitable for users with a stable setup or less demanding working environments.

2.Wireless Probe

Wireless Probes improve on traditional wired setups.By eliminating cables and alligator clips, they transmit trigger signals wirelessly, making installation, operation, and repositioning much more flexible and convenient.

  • Wired vs. Wireless Probe:

    Feature  Wired Probe Wireless Probe（NB-WPT-X5）
    Connection Requires a physical cable connection Wireless signal transmission, effective range up to 20 meters
    Stability Susceptible to cable tugging, wear, and poor alligator clip contact Uses three-wire normally open (NO) signal; no physical contact points, unaffected by cable movement or loose clips
    Workspace Cleanliness Cables and clips may clutter the machining area or get in the way

    No exposed cables; the transmitter module can be placed independently, keeping the workspace clean and reducing fixture entanglement risks
    Suitable Scenarios Ideal for fixed tool- setting positions or smaller operating ranges Perfect for frequent tool changes, large machine travel, or when a clean workspace is a priority
    Installation Flexibility Limited by cable length and restricted movement Receiver module can be magnetically mounted or taped;the transmitter module can be freely positioned relative to workpiece and tool

  • Before You Buy: Confirm Compatibility

Before purchasing, please make sure your CNC controller supports three-wire normally open (NO) signal input.

The NB-WPT-X5 features a universal three-wire normally open design with the following connections:

  • IN — Signal input
  • GND — Ground
  • 5–24V — Power

This design is widely compatible with most GRBL, Mach3 controllers, and NymoLabs’ own equipment.

What Does ‘Normally Open (NO)’ Mean?

  1. Tech Tip: “Normally Open” (NO) is a term describing the default state of an electrical contact.
  2. Idle state: The circuit is open and does not send any signal.
  3. Triggered state: When the tool touches the Probe, the circuit closes instantly, sending a clear trigger signal to the controller.

This “no-touch, no-signal” mechanism ensures that every measurement made with the NB-WPT-X5 is accurate and reliable, making it perfect for tool height measurement and work offset setting.

Detailed Specifications: 

Not Sure if Your CNC Controller Supports a Three-Wire Normally Open (NO) Wireless Probe?

The easiest way to confirm compatibility is to send the following information to our technical support team (support@nymolabs.com):

Clear photos of your control board showing the Probe interface

The user manual or interface diagram of your control board (if available)

This information allows us to accurately identify your controller’s interface type and provide guidance on compatibility and wiring recommendations.

  • Unboxing: What’s Included

Transmitter Module ×1

Receiver Module ×1

3M Double-Sided Adhesive ×1

200mm Cable A ×1

200mm Cable B ×1

1.Flexible Mounting

Both modules feature built-in strong magnets, and the package includes 3M double-sided adhesive, allowing secure installation on most surfaces and adapting to diverse CNC layouts.

2.Wide Compatibility with Cables

Two types of interface cables are included, ensuring easy adaptation to different brands and models of CNC controllers.

3.High-Precision Stainless Steel Contact Plate

The probe contact plate is precision-machined from SUS304 stainless steel, offering high hardness and wear resistance. Combined with an integrated graphite bearing design, it achieves up to 0.02mm repeatability, ensuring long-term measurement stability.

4.Long Battery Life：

The transmitter module is powered by a CR2032 button cell, capable of performing up to 3,000 tool measurements, providing reliable operation over extended use.

  • Installation & Setup: 3 Simple Steps for a Plug-and-Play Setup

The NB-WPT-X5 is designed with a “ready-to-use out of the box” philosophy. All units are pre-paired at the factory for immediate operation.

Quick Setup Guide：

  • Connect: Plug the receiver module into your controller’s Probe port.
  • Activate: Remove the battery isolation tab from the transmitter module.
  • Set: Refer to the height label on the transmitter module and enter the actual probe height into your controller, then save.

Tutorial Video：https://www.youtube.com/watch?v=1coip6Cuopw

  • Real User Feedback

Since the launch of the wireless Probe, we’ve received highly positive feedback. Early adopters have shared their genuine experiences.

Facebook User Reviews (https://www.facebook.com/groups/nymolabs)：

Mr. Smith shared his experience：”Really impressed with the new wireless touch probe!

Installed the Nymolabs Wireless Probe today and it’s an instant upgrade over my wired probe.

Why I like it:

No alligator clip or loose lead to catch on clamps, reliable repeatability, and a solid build that feels (and looks) really well made. After a few test probes the Z-zero was bang-on each time.

Super impressed NymoLabs!”  

Real User Feedback from Amazon：

Brandon B. shared:"It is SO nice not to worry about wires, and I love that the receiver is magnetic for convenient mounting.

I also like that it has already been measured (with what I assume is a more accurate tool than mine).

I honestly can't believe how well this is priced for what it is and the overall quality.

Definitely a winner here - recommend"

The Rancher shared:"This is a nice compact Z-Axis tool for your milling machine. The unit feels solid and I look forward to seeing how it works in practice. "

  • Who Is the NB-WPT-X5 Wireless Probe For?

If you’re looking for a more efficient, cleaner, and reliable way to set your tools, the NB-WPT-X5 Wireless Probe is ideal for:
√ CNC users running NymoLabs machines or GRBL/Mach3 controllers
Designed with a common three-wire normally open (NO) signal, it’s easy to install and works seamlessly with most setups.

√ Users seeking faster tool changes and higher machining accuracy
The NB-WPT-X5 quickly provides stable and precise tool height measurements, significantly reducing errors from manual adjustments and accelerating your workflow.


√ Users who want to eliminate cable clutter and maintain a tidy workspace
The wireless design removes tangled cables, loose alligator clips, and fixture snags, making your machining process smoother and your work area cleaner and safer.