{"title":"Hot Sales – Bestselling Industrial Borescopes by Ralcam","description":"\u003cp\u003eThe models that keep selling. These are the Ralcam borescopes customers order most — the ones that hit the right balance of reach, image quality, and price for everyday inspection work.\u003c\/p\u003e\u003c!--split--\u003e\u003ch2\u003eWhy These Models Sell\u003c\/h2\u003e\u003cp\u003eBestsellers here are not the most expensive tools in the range. They are the ones that cover the widest set of real jobs without asking the buyer to over-specify — a 4.3\" screen, a 6.2 mm semi-rigid probe, and enough articulation to steer where it matters.\u003c\/p\u003e\u003ch3\u003eWhat's in this collection\u003c\/h3\u003e\u003cp\u003eA mix of price points and formats: entry \u003ca href=\"\/collections\/iphone-borescope\"\u003ephone-connected probes\u003c\/a\u003e under $100 for occasional use, mid-range \u003ca href=\"\/collections\/borescope-with-screen\"\u003estandalone screen units\u003c\/a\u003e around $110 to $170 that cover most automotive and property work, a dedicated AC evaporator cleaning camera, and the F606B 4-way platform for buyers who need full 360° tip control.\u003c\/p\u003e\u003ch3\u003eNot sure which to pick?\u003c\/h3\u003e\u003cp\u003eStart from the job rather than the spec sheet. Engine work sizes on the access hole — see \u003ca href=\"\/collections\/automotive-borescope-cameras\"\u003eautomotive borescopes\u003c\/a\u003e. Drain and duct work sizes on cable stiffness — see \u003ca href=\"\/collections\/plumbing-borescope-cameras\"\u003eplumbing borescopes\u003c\/a\u003e. Everything else starts at the \u003ca href=\"\/collections\/borescope\"\u003efull borescope range\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eAll models are IP67 rated with adjustable LED illumination and a 1-year warranty.\u003c\/p\u003e","products":[{"product_id":"f408a-endoscope-camera-android-iphone","title":"Endoscope Camera for Android \u0026 iPhone – Ralcam F408A","description":"\u003ch2\u003eRalcam F408A — Phone-Connected Articulating Borescope\u003c\/h2\u003e\n\u003cp\u003eThe F408A turns your iPhone or Android into a professional inspection camera. Plug the probe into your phone via USB-C or Lightning, open the free app, and you're looking inside an engine cylinder, pipe, or wall cavity in under 60 seconds — no screen to carry, no extra battery to charge.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe diameter:\u003c\/strong\u003e 5.5 mm (F405A), 6.2 mm (F406A), or 8.5 mm (F408A) — choose at checkout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticulation:\u003c\/strong\u003e 2-Way 180° steering wheel control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 1280×720 HD with 1\/9\" CMOS sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination:\u003c\/strong\u003e 6 adjustable high-lumen LEDs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof:\u003c\/strong\u003e IP67 — fully sealed against oil, coolant, and water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable:\u003c\/strong\u003e 1.5 m flexible, tungsten braid reinforced (20,000+ bend cycles)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e iPhone 13 \/ 14 \/ 15 (Lightning and USB-C), Android USB-C, iPad\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, FCC, RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhere Mechanics Use the F408A\u003c\/h2\u003e\n\u003cp\u003eA gasoline engine mechanic inserts the 6.2 mm probe through the spark plug hole to check piston crown deposits after a misfire code. A plumber pushes the flexible cable around a P-trap to locate a hairline crack without cutting into drywall. An HVAC technician feeds it into a supply duct to confirm whether mold growth has reached the plenum box. In each case, the phone screen serves as the display, the thumb wheel steers the camera tip, and the image is sharp enough to spot a crack 15 mm wide at the tip.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the F408A Over a Built-In Screen Model\u003c\/h2\u003e\n\u003cp\u003eIf you already carry a phone on the job, the F408A adds almost no weight to your kit. The phone screen is larger and brighter than most built-in borescope displays, and photos and videos save directly to your camera roll for easy sharing with clients or warranty claims. For technicians who prefer a standalone unit, the \u003ca href=\"\/products\/auto-inspection-camera-n505\"\u003eN505\u003c\/a\u003e (5\" screen, 2-way) or \u003ca href=\"\/products\/4-articulating-borescope-f606b\"\u003eF606B\u003c\/a\u003e (4.3\" screen, 4-way) are the next steps up.\u003c\/p\u003e\n\n\u003ch2\u003eIn the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eF408A articulating borescope probe and handle\u003c\/li\u003e\n\u003cli\u003eUSB-C and Lightning adapters\u003c\/li\u003e\n\u003cli\u003eCarrying case\u003c\/li\u003e\n\u003cli\u003eUser manual (EN)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ralcam","offers":[{"title":"8.5mm (0.33in) \/ 1.5m (4.9ft)","offer_id":41881155862624,"sku":"F408A-S1.5M","price":99.99,"currency_code":"USD","in_stock":true},{"title":"6.2mm (0.24in) \/ 1.5m (4.9ft)","offer_id":41881155895392,"sku":"F406A-1.5M","price":104.3,"currency_code":"USD","in_stock":false},{"title":"5.5mm (0.22in) \/ 1m (3.3ft) Rigid Tube","offer_id":42941207281760,"sku":"F405A-R1M","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/2017\/1616\/files\/f405a-articulating-borescope-for-smartphone-and-iphone-9013058.jpg?v=1764742115"},{"product_id":"4-articulating-borescope-f606b","title":"4-Way Articulating Borescope – Ralcam F606B","description":"\u003ch2\u003eRalcam F606B — 4-Way Articulating Borescope with 4.3\" Screen\u003c\/h2\u003e\n\u003cp\u003eThe F606B steers its camera tip independently up, down, left and right, so you can round a bend and then look back along the surface you just passed — without withdrawing the probe and starting again. A 4.3\" screen and 4400 mAh battery make it a standalone tool: no phone, no app, six hours on a charge.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe diameter:\u003c\/strong\u003e 3.9 mm or 6.2 mm — choose at checkout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticulation:\u003c\/strong\u003e 4-way, 360° full-direction control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScreen:\u003c\/strong\u003e 4.3\" HD, 1280×720\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsertion tube:\u003c\/strong\u003e Tungsten wire mesh — 1 m, 2 m, 3 m or custom length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination:\u003c\/strong\u003e High-lumen LED, adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof:\u003c\/strong\u003e IP67 — sealed against water and oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 4400 mAh rechargeable — up to 6 hours continuous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecording:\u003c\/strong\u003e Photo and video to TF card, up to 32 GB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e Multilingual menu\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, FCC, RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhere the 3.9 mm Probe Changes the Job\u003c\/h2\u003e\n\u003cp\u003eMost borescopes stop at 5.5 mm. The 3.9 mm option goes through a spark plug hole on a modern small-displacement engine where a 6 mm probe simply will not fit — and once it is in, the 4-way tip lets you sweep the full cylinder wall and the underside of the valve seats from a single insertion point.\u003c\/p\u003e\n\u003cp\u003eAn aviation MRO technician uses the same combination to walk a turbine blade trailing edge. A mechanic checking carbon buildup on GDI intake valves angles the tip back toward the port roof — an area a 2-way scope cannot reach at all, because it can only bend in one plane.\u003c\/p\u003e\n\n\u003ch2\u003eF606B vs. F606A — Built-In Screen or Your Phone\u003c\/h2\u003e\n\u003cp\u003eIdentical articulation, identical probe options. The \u003ca href=\"\/products\/endoscope-iphone-android-f606a\"\u003eF606A\u003c\/a\u003e uses your phone as the display and saves footage straight to your camera roll, which is faster when you need to send a client a photo from the bay. The F606B carries its own screen and battery, so your phone stays free and the inspection does not stop when a call comes in.\u003c\/p\u003e\n\u003cp\u003eIf you want a larger display, the \u003ca href=\"\/products\/m6x-4-articulating-endoscope\"\u003eM6X\u003c\/a\u003e has a 5\" IPS panel and a replaceable 18650 cell you can swap in the field. If you would rather change probes than buy a second scope, look at the modular \u003ca href=\"\/products\/m506-modular-borescope-interchangeable-probes\"\u003eM506\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eIn the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eF606B 4-way articulating borescope\u003c\/li\u003e\n\u003cli\u003eInsertion tube in the diameter and length selected\u003c\/li\u003e\n\u003cli\u003eUSB charging cable\u003c\/li\u003e\n\u003cli\u003eCarrying case\u003c\/li\u003e\n\u003cli\u003eUser manual (EN)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ralcam","offers":[{"title":"6.2mm (0.24in) \/ 1m (3.3ft)","offer_id":41810076631136,"sku":"F606B-1M","price":239.99,"currency_code":"USD","in_stock":true},{"title":"6.2mm (0.24in) \/ 2m (6.6ft)","offer_id":42406010814560,"sku":"F606B-S2M","price":269.99,"currency_code":"USD","in_stock":true},{"title":"6.2mm (0.24in) \/ 3m (9.8ft)","offer_id":42406010847328,"sku":"F606B-3M","price":289.99,"currency_code":"USD","in_stock":false},{"title":"6.2mm (0.24in) \/ customized","offer_id":42406010880096,"sku":"F606B-C","price":319.99,"currency_code":"USD","in_stock":false},{"title":"6.2mm (0.24in) Dual Lens \/ 1.5m (4.9ft) Semi-Rigid","offer_id":43073893335136,"sku":"F606BD-S1.5M","price":299.99,"currency_code":"USD","in_stock":false},{"title":"3.9mm (0.15in) \/ 1m (3.3ft)","offer_id":42907785527392,"sku":"F604B-1M","price":299.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/2017\/1616\/files\/f606b-articulating-borescope-with-6-led-lights-62mm-lens-35-ips-hd-screen-2747392.jpg?v=1764742115"},{"product_id":"q3-ac-evaporator-cleaning-borescope","title":"AC Evaporator Cleaning Borescope – Ralcam Q3","description":"\u003ch2\u003eRalcam Q3 — AC Evaporator Cleaning Borescope\u003c\/h2\u003e\n\u003cp\u003eMost evaporator jobs are done blind: spray cleaner into the duct, hope it reached the coil, close it up. The Q3 puts a side-view camera and a side-spray nozzle on the same probe, so you watch the coil while you clean it — and you stop when it is actually clean, not when the can runs out.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Makes It Different\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-view design\u003c\/strong\u003e — side-view camera paired with a side-spray nozzle on a single probe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.3\" portable display\u003c\/strong\u003e — see the coil surface in real time as the cleaner hits it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAround 30 minutes per job\u003c\/strong\u003e — deep clean in place, without removing the dashboard or evaporator housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhoto and video recording\u003c\/strong\u003e — before-and-after evidence for the customer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof body\u003c\/strong\u003e — built for wet, chemical-heavy work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eClean Instead of Replace\u003c\/h2\u003e\n\u003cp\u003ePulling a dashboard to reach an evaporator is a day of labour on many vehicles, and the part itself is not cheap. A mould-fouled coil that would otherwise be quoted as a replacement can usually be brought back with a thorough in-place clean — the obstacle has always been that you cannot verify the result without seeing it.\u003c\/p\u003e\n\u003cp\u003eThat verification is the whole point of the Q3. You show the customer the before shot, the after shot, and the invoice is a fraction of a replacement quote. Customers who refuse a cleaning service on trust alone tend to approve it once they have seen the coil.\u003c\/p\u003e\n\n\u003ch2\u003eWhere It Is Used\u003c\/h2\u003e\n\u003cp\u003eAutomotive air conditioning service, residential and commercial HVAC maintenance, and mould, dust and debris detection inside evaporator coils and ducts. HVAC contractors use the recording function to build a documented service history; automotive shops use it to justify the job at the counter.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Tools\u003c\/h2\u003e\n\u003cp\u003eFor duct and plenum inspection without the spray function, the \u003ca href=\"\/products\/ralcam-r406s-endoscope-automotive\"\u003eR406S\u003c\/a\u003e covers engine bay and HVAC work with a 6.2 mm semi-rigid probe. For wider ducts and longer reach, the \u003ca href=\"\/products\/ralcam-n308s-car-inspection-camera\"\u003eN308S\u003c\/a\u003e offers 2 m and 3 m cable options.\u003c\/p\u003e","brand":"Ralcam","offers":[{"title":"Default Title","offer_id":41898324164704,"sku":"Q3","price":79.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/2017\/1616\/files\/q3-visual-evaporator-cleaning-borescope-with-43-hd-screen-precision-cleaning-starts-with-clear-vision-3951803.jpg?v=1764742115"},{"product_id":"automotive-inspection-camera-h406b","title":"Automotive Inspection Camera – Ralcam H406B | 4.3\" Borescope","description":"\u003ch2\u003eRalcam H406B — Detachable Automotive Inspection Camera\u003c\/h2\u003e\n\u003cp\u003eThe H406B separates the probe from the handset. Swap between a 6.2 mm and an 8.5 mm probe for different access points, change cable length for a different vehicle, or replace a worn probe after two years of daily use — without buying a new unit. The 4.3\" screen runs the whole thing standalone, no phone required.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe diameter:\u003c\/strong\u003e 6.2 mm or 8.5 mm — detachable, choose at checkout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticulation:\u003c\/strong\u003e 2-way, 180° damping-knob steering — holds its angle once set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScreen:\u003c\/strong\u003e 4.3\" LCD, true-colour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 1280×720 \/ 1920×1080\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus distance:\u003c\/strong\u003e 20–100 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsertion tube:\u003c\/strong\u003e Semi-rigid or flexible — 1 m or 2 m, up to 3 m on request\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination:\u003c\/strong\u003e Six high-lumen LEDs, adjustable brightness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof:\u003c\/strong\u003e IP67 probe head — note the handset itself is not waterproof\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 2200 mAh rechargeable — up to 3 hours continuous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, FCC, RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy a Detachable Probe Pays for Itself\u003c\/h2\u003e\n\u003cp\u003eA mobile technician running a fleet account needs different reaches for different vehicles — a 1 m cable for under-bonnet work, 2 m to get down a diesel cylinder bank. With a fixed-probe scope that means two tools. With the H406B it means one handset and a second probe that costs a fraction of a complete unit.\u003c\/p\u003e\n\u003cp\u003eThe same logic applies to wear. Probe tips take the abuse: heat, oil, and being fed past sharp edges. When one fails after eighteen months of daily use, you replace the probe, not the scope.\u003c\/p\u003e\n\n\u003ch2\u003eH406B vs. H406A — Built-In Screen or Your Phone\u003c\/h2\u003e\n\u003cp\u003eSame detachable-probe design, same 2-way damping-knob steering, and probes are interchangeable between them. The H406B has its own 4.3\" screen and battery and runs standalone. The \u003ca href=\"\/products\/ralcam-h406a-iphone-borescope\"\u003eH406A\u003c\/a\u003e uses your phone as the display, which makes it lighter to carry if the phone is already in your pocket.\u003c\/p\u003e\n\u003cp\u003eFor a 5\" screen and a replaceable 18650 cell, see the \u003ca href=\"\/products\/auto-inspection-camera-n505\"\u003eN505\u003c\/a\u003e. For independent up\/down\/left\/right tip control rather than a single bending plane, step up to the 4-way \u003ca href=\"\/products\/4-articulating-borescope-f606b\"\u003eF606B\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eIn the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eH406B handset with 4.3\" screen\u003c\/li\u003e\n\u003cli\u003eDetachable probe in the diameter and length selected\u003c\/li\u003e\n\u003cli\u003eUSB charging cable\u003c\/li\u003e\n\u003cli\u003eCarrying case\u003c\/li\u003e\n\u003cli\u003eUser manual (EN)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eVideo Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"nofollow noopener noreferrer\" href=\"https:\/\/www.youtube.com\/@ralcamborescope\" target=\"_blank\"\u003eRalcam Borescope Official YouTube Channel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"nofollow noopener noreferrer\" href=\"https:\/\/www.youtube.com\/watch?v=sRusd6xn4F4\" target=\"_blank\"\u003eRalcam 4-Way 360° Articulating Borescope F606B Review\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ralcam","offers":[{"title":"6.2mm (0.24in) \/ 2m (6.6ft) Flexible Cable","offer_id":42304272629856,"sku":"H406B-2M","price":139.99,"currency_code":"USD","in_stock":false},{"title":"6.2mm (0.24in) \/ 2m (6.6ft) Semi-Rigid Cable","offer_id":42405787828320,"sku":"H406B-S2M","price":149.99,"currency_code":"USD","in_stock":true},{"title":"8.5mm (0.33in) \/ 1m (3.3ft) Flexible Cable","offer_id":42405787861088,"sku":"H408B-1M","price":119.99,"currency_code":"USD","in_stock":false},{"title":"8.5mm (0.33in) \/ 2m (6.6ft) Semi-Rigid Cable","offer_id":42405787959392,"sku":"H408B-S2M","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/2017\/1616\/files\/h406b-borescope-with-43-hd-screen-and-6-adjustable-led-lights-ip67-waterproof-8777421.jpg?v=1764742115"}],"url":"https:\/\/ralcam.com\/collections\/hot-sales-series.oembed","provider":"Ralcam","version":"1.0","type":"link"}