Automotive Endoscope – Ralcam R406S | 4.3" HD Inspection

Yes. Models with a built-in screen capture photos and video directly to a TF/microSD card (up to 32GB); you can then transfer files with a card reader or over USB. Phone-connected models save to your phone through the companion app.

The probe is built for mechanical inspection, not sustained heat — always inspect engines and machinery once they have cooled. Brief contact with warm surfaces is fine; avoid inserting into running-hot components. See each product page for its rated temperature range.

Every Ralcam scope carries its own rechargeable power — the phone-connected models included. Standalone screen models have a built-in rechargeable battery (up to about 6 hours of continuous use on models like the F606B) and recharge over USB. Some, such as the N5, use a replaceable 18650 cell that is also rechargeable, so you can recharge in place or swap in a charged spare for all-day work. Phone-connected models such as the F408A, F606A and H406A also have their own battery and need to be charged before use: your phone provides the screen, never the power, so its charge is left untouched.

Screen models record to a TF/microSD card up to 32GB. Whether a card is included in the box is noted on each product page; if it isn't, any standard card up to 32GB will work.

Articulation means the camera tip bends on command, so you can look around corners instead of only straight ahead. 2-way models steer the tip in one plane (you rotate the probe body to reach any angle); 4-way models add a thumb joystick for full 360° control. It is what lets you inspect cylinder walls, valves and turbine internals.

Some models do. Those with a probe-lock button — such as the N5 and the N3 series (N306/N308) — hold the tip at the angle you set, so you can line up and take a steady photo hands-free. On models without a lock, you simply hold the articulation while shooting.

Gently wipe the camera head with a soft, lint-free cloth. For oil, grease, or debris from automotive or plumbing inspections, use a cloth lightly dampened with isopropyl alcohol or mild soapy water, then dry it before storing. Avoid abrasive materials or harsh solvents, which can scratch the lens or damage the waterproof seal.

On several models the probe is detachable, so a damaged probe can be swapped instead of replacing the whole tool — for example the H406B, M506, F606B and F606A. For fixed-probe models, contact our support team with your order number and, as a factory-direct brand, we'll handle repair or replacement in-house.

We ship to the US, Canada, UK, Germany, and most of Europe. You'll see an estimated delivery date right on this product page—just below the purchase button—based on your location, and we'll email you a tracking number as soon as your order is dispatched.

Yes. Orders over $119 ship free with standard delivery within the United States. For orders under $119, a shipping fee is calculated automatically at checkout based on your delivery destination.

Every RALCAM inspection camera includes a 1-year manufacturer warranty covering defects in materials and workmanship. As a factory-direct brand with 16 years of engineering experience, we handle all warranty support in-house—just contact us with your order number and we'll make it right.

If the product isn't right for you, you can return it within 30 days of delivery for a full refund on the item—no restocking fees and free return shipping. Just contact our support team with your order number and we'll get your return started. Items should be in their original condition and packaging.

We accept all major credit cards, PayPal, Apple Pay, and Google Pay. All prices are shipped DDP (Delivered Duty Paid)—duties and taxes are already included, so there are no surprise customs charges when your order arrives.

Fogging usually happens when the probe moves between temperatures, such as from a cold engine bay into a warm room. Let the device acclimate for a minute or two and it will clear on its own. Persistent haze is almost always residue on the lens—clean it with a soft cloth, and make sure any protective film has been removed from the camera head.

Before first use, draw the probe out of its coil slowly and evenly to avoid kinking the cable, then remove the protective cap from the camera lens. On screen models, also peel the protective film off the display.

The R406S uses a 6.2mm semi-rigid cable that bends and then holds the shape you give it — ideal for engine bays, where you often need to route the probe around components and keep it steady for a clear shot. It pairs with a 4.3-inch HD screen.

The box contains the R406S borescope, a user manual, a charging cable and a cleaning cloth.