--- product_id: 452655471 title: "Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine" brand: "rattmmotor" price: "KSh41370" currency: KES in_stock: true reviews_count: 4 url: https://www.desertcart.co.ke/products/452655471-normally-open-mach3-cnc-automatic-tool-sensor-gauge-changer-cnc store_origin: KE region: Kenya --- # 0.001mm ultra-precise positioning DC24V stable power input IP67 dust & waterproof durability Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine **Brand:** rattmmotor **Price:** KSh41370 **Availability:** ✅ In Stock ## Summary > ⚙️ Precision Meets Durability: The Ultimate CNC Tool Sensor You Can't Afford to Miss! ## Quick Answers - **What is this?** Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine by rattmmotor - **How much does it cost?** KSh41370 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/452655471-normally-open-mach3-cnc-automatic-tool-sensor-gauge-changer-cnc) ## Best For - rattmmotor enthusiasts ## Why This Product - Trusted rattmmotor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** IP67-rated dustproof and waterproof design keeps your sensor reliable even in coolant and metal shavings. - • **Magnetic Mounting:** Strong bottom magnet ensures rock-solid attachment to your CNC machine for consistent readings. - • **Smart Safety Alerts:** Over-travel alarm protects your investment by preventing tool damage before it happens. - • **Micron-Level Precision:** Achieve flawless tool length setting with 0.001mm repeat accuracy—because every micron counts. - • **Plug & Play Simplicity:** No built-in amplifier needed—direct NC program input saves setup time and reduces errors. ## Overview The RATTMMOTOR Mach3 CNC Automatic Tool Sensor is a high-precision, normally open 4-wire probe designed for CNC routers and engravers. Featuring 0.001mm repeat positioning accuracy, a 5mm stroke, and a robust IP67-rated dustproof and waterproof housing, it ensures reliable tool length setting, wear detection, and breakage alerts. Its magnetic base allows easy mounting, while the built-in over-travel alarm and stable DC24V input enhance operational safety and consistency. Ideal for professionals demanding precision and durability in CNC machining. ## Description Package include:1 x CNC Router Z Axis High Tool SettingSpecification: Output mode: NC(normally closed) Pre trip: Almost 0Stroke: 5mmRepeat positioning accuracy: 0.001mm(operation speed:50-200mm/min) Life: 3000000 times.Contact force: 1.5NOuter shell: Grinding 4S. Protection: IP67Cutter head: Diameter 20mm, hard carbideShock rating: 20mA(MAX) DC24V recommended value(10mA)resistive load Cable: 1.5M 2-cell tensile strength 30N Minimum bending radius R7 Protection Tube: 1.3M (Minimum bending radius R25)Exceed the specifications: NC(Normally closed),distance signal about 5mm Shock rating: DC24V 20mA(MAX) 10mA(Resistive load).Precautions for use:The contact cannot exceed the stroke(stroke is 5mm) of the tool setting tool, otherwise the tool will easily damage the tool setting tool.Do not release it immediately when touching the tool face by hand to avoid damaging the internal structure of the tool setting tool and affecting the service life and efficiency.After the tool is finished, the knife must be lifted vertically to leave the contact surface. Do not move it laterally. This should be easy to damage the tool. Review: False advertising Review: Arrived DOA. I repaired it but the internals are basic. ## Features - 【Description】The tool setting instrument is a special tool setting instrument for the engraving machine machining center machine. The output signal of the tool setting instrument is received by the numerical control system and then the tool length setting, tool wear detection and tool breakage are detected by the program control. In the case of no vibration and malfunction, the thermal deformation of the machine can be corrected according to the rated voltage and current and the specified speed. - 【Parameter】This is a normally open 4-wire high-precision tool setting instrument with a stroke of 5mm. The positioning accuracy is 0.001mm, the contact life is up to 3 million times, the contact force is 1.5N, and the contact rating: DC24V 20mA. - 【Material】The housing material of this tool setter is made of 4S grinding grade material. The bottom magnet design can be directly connected to the machine and firmly adsorbed to the body. The contact material is made of super hard alloy, the design is exquisite and the installation is simple. - 【Feature-1】This tool setting instrument is designed with dustproof and waterproof structure, which can still have strong durability under the condition of coolant and iron filings. It does not need a built-in amplifier and will not be caused deviations by the location temperature and power supply voltage fluctuations of the tool setting instrument, which can be directly input to the NC program. - 【Feature-2】The tool setter will send out an alarm signal in time when it is over-travel to avoid other troubles caused by equipment operation. Moreover, the tool setter has strong anti-interference. The protruding sharp corner of the tool directly touches the tool tip related to the machining size, detects its value and size, and outputs the signal. It has higher accuracy than the average value obtained by converting the amount of light and electricity. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08LK93NTC | | Best Sellers Rank | #184,154 in Home Improvement ( See Top 100 in Home Improvement ) #140 in Engraving Tools | | Brand | RATTMMOTOR | | Brand Name | RATTMMOTOR | | Current Rating | 20 Milliamps | | Customer Reviews | 2.7 out of 5 stars 12 Reviews | | Global Trade Identification Number | 00713721466467 | | Item Dimensions | 15 x 7 x 11 Centimeters | | Item Weight | 0.45 Kilograms | | Item dimensions L x W x H | 15 x 7 x 11 Centimeters | | Manufacturer | RTM | | Material | Aluminium | | Material Type | Aluminium | | Maximum Supply Voltage | 24 Volts (DC) | | Measurement Accuracy | 0.001mm | | Measuring Range | 0mm to 5mm | | Model Number | H:65 | | Mounting Type | Surface Mount | | Output Type | NPN | | Sensing Distance | 5 Millimetres | | Specific Uses For Product | CNC machining processes | | Style | Modern | | Style Name | Modern | | UPC | 713721466467 619191755172 769135849716 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 100 Degrees Celsius | ## Product Details - **Brand:** RATTMMOTOR - **Item Weight:** 0.45 Kilograms - **Item dimensions L x W x H:** 15 x 7 x 11 Centimeters - **Material:** Aluminium - **Style:** Modern ## Images ![Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine - Image 1](https://m.media-amazon.com/images/I/71bLea7Wj9L.jpg) ![Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine - Image 2](https://m.media-amazon.com/images/I/71MJjnioSoL.jpg) ![Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine - Image 3](https://m.media-amazon.com/images/I/71OyWvPT7+L.jpg) ![Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine - Image 4](https://m.media-amazon.com/images/I/71Vc0ZyjlWL.jpg) ![Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine - Image 5](https://m.media-amazon.com/images/I/71yEzVYZB5L.jpg) ## Customer Reviews ### ⭐ False advertising *by K***N on 7 March 2026* ### ⭐⭐ Arrived DOA. I repaired it but the internals are basic. *by A***G on 4 March 2024* ### ⭐ False Advertising *by I***O on 10 December 2025* ## Frequently Bought Together - RATTMMOTOR Normally Open Mach3 CNC Automatic Tool Sensor Gauge Changer CNC Z Axis Probe Tool Touch Sensor Setter Setting 4 Wires for CNC Router Engraver Machine - PGFUN DIY CNC Touch Probe XYZ Axis 3D Digitizing Edge Finder 3-Coordinate Measuring Sensor Kit with 6 mm Shank & 2.0 mm Tungsten Steel Ball Tip --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.ke/products/452655471-normally-open-mach3-cnc-automatic-tool-sensor-gauge-changer-cnc](https://www.desertcart.co.ke/products/452655471-normally-open-mach3-cnc-automatic-tool-sensor-gauge-changer-cnc) --- *Product available on Desertcart Kenya* *Store origin: KE* *Last updated: 2026-04-25*