6 models in this file
Klein Tools Borescopes: Screen or Wi-Fi Phone Scope?
As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
Klein Tools has long served electricians, HVAC contractors, and service plumbers by delivering rugged diagnostic gear engineered for unforgiving mechanical environments. In visual troubleshooting, investing in a reliable klein tools borescope camera eliminates invasive exploratory cutting by guiding an illuminated optical sensor into dark wall cavities, blocked drainage runs, and packed electrical panels. For mobile service technicians who run light tool bags or travel between job sites out of a small van, having high-grade remote optics provides instant confirmation of pipe obstructions, degraded wire jackets, and hidden framing obstacles without demanding bulky secondary hardware.
The current lineup divides into two distinct hardware designs: self-contained units with integrated color displays and ultra-compact wireless or plug-in probes that stream real-time footage straight to a mobile phone screen.
The line-up at a glance
Klein Tools Borescope Cameras Compared
| Model | Display Method | Probe Length | Camera Diameter | Capture Resolution |
|---|---|---|---|---|
| Klein Tools ET17 Utility Borescope | Built-In 4.3-Inch LCD | 9.8 Feet | 5.5 mm | 1080p |
| Klein Tools ET19 Wi-Fi Pro Borescope | 4.3-Inch LCD & Wi-Fi App | 9.8 Feet | 5.5 mm (Dual-Lens) | 1080p |
| Klein Tools ET21 WiFi Borescope | Smartphone via Wi-Fi App | 5 Feet | 5.5 mm | 480p |
| Klein Tools ET16 Borescope | Android Phone via USB-C | 10 Feet | 8 mm | 640×480 |
| Klein Tools ET30 Wireless Inspection Camera | Smartphone via Wi-Fi App | Not listed | Fits 1-1/8-Inch Holes | 1080p |
| Klein Tools ET20 Wi-Fi Borescope | Smartphone or Tablet via Wi-Fi App | 6 Feet | 9 mm | 640×480 |
No. 1 of 6 · Klein Tools
Klein Tools ET17 Utility Borescope for Standalone Diagnostic Work
4.2 Amazon buyer average
Best for: Standalone inspections without mobile device pairing
What the listing says
- HIGH RESOLUTION IMAGING The Utility Borescope features high-resolution imaging capabilities, allowing users to capture clear and detailed visuals of…
- FLEXIBLE AND DURABLE DESIGN Equipped with a flexible and durable 9.8-Foot snake, the camera can navigate through twists, turns, and…
- CLEAR VIEWING Experience exceptional image quality on 4.3-Inch LCD color screen with adjustable brightness for effortless viewing in…
- EASILY CAPTURE IMAGES AND VIDEO Borescope allows users to capture images or videos of an inspection which can serve as a…
- ATTACHMENTS INCLUDED Borescope includes a mirror to enhance visibility, a hook to grab and retrieve, and a magnet…
- LED LIGHTING The camera's LED light illuminates the inspection area, ensuring optimal visibility in dark or poorly lit…
Pros
- Built-in 4.3-inch color screen
- Detachable 9.8-foot gooseneck snake
- Includes hook magnet and mirror
Cons
- Bulkier monitor housing
- Lacks wireless mobile app streaming
The Klein Tools ET17 Utility Borescope is an all-in-one visual inspection tool designed for field workers who prefer an independent screen rather than linking to personal phones on the job. Built around a dedicated 4.3-inch color LCD monitor with an 854 x 480 screen resolution, it provides immediate real-time viewing with three levels of digital zoom and a 180-degree display rotation feature to orient upside-down views. The handheld monitor features high-visibility orange styling, a self-storing kickstand that supports hands-free viewing on a level surface, and an ISO sensitivity range of 100 to 3200 for managing diverse indoor lighting conditions.
Diagnostic reach comes courtesy of a 9.8-foot detachable nylon USB-C snake terminating in a slim 5.5 mm waterproof IP67-rated camera head. The camera module is ringed with bright LEDs featuring four distinct brightness levels, allowing users to light up dark cavities without blowing out close-range reflective surfaces. Technicians can capture 1080p video files in MP4 format and still photos in JPEG format using either automatic or manual shooting modes, and files can later be transferred directly to a computer through the USB-C interface. The package also includes mirror, hook, and magnet accessories that clip onto the camera head to retrieve dropped hardware or peer around 90-degree corners.
This self-contained tool is ideal for industrial plant mechanics, HVAC technicians, and municipal plumbers who want an all-weather diagnostic scope that functions without Wi-Fi setups, app updates, or phone battery consumption. Because it packs flat once the gooseneck is detached, it stows securely inside a protective klein tool box alongside other meters and diagnostic testers. Users who require side-view perspectives without manually attaching a mirror will find the dual-lens ET19 a more advanced alternative.
No. 2 of 6 · Klein Tools
Klein Tools ET19 Wi-Fi Pro Borescope for Dual-Angle Inspection
4.7 Amazon buyer average
Best for: Dual-angle inspections with full HD resolution
What the listing says
- HIGH RESOLUTION IMAGING The Pro Borescope features a dual-lens designed to capture high-resolution images from multiple angles, allowing users…
- FLEXIBLE AND DURABLE DESIGN Equipped with a 5.5 mm, 9.8-Foot armored snake, the camera can navigate through twists, turns, and…
- CLEAR VIEWING Experience exceptional image quality on 4.3-Inch LCD color screen with adjustable brightness for effortless viewing in…
- EASILY CAPTURE AND SHARE IMAGES AND VIDEO: Use Wi-Fi Borescope ET19 app (available in Google Play…
- ATTACHMENTS INCLUDED Features a hook accessory to grab and retrieve, and a magnet to ensure secure and reliable…
- LED LIGHTING Inspection camera's LED light ensures optimal visibility in dark or poorly lit areas, allowing users to…
Pros
- Dual-lens camera system
- 1080p display and video capture
- App sharing and USB-C offload
Cons
- Heavier handheld console assembly
- Does not include mirror accessory
Stepping up to dual-perspective optical capabilities, the Klein Tools ET19 Wi-Fi Pro Borescope provides commercial trades with forward and side-facing inspection angles built directly into a single 5.5 mm camera housing. The console features a crisp 4.3-inch color LCD display boasting 1920 x 1080 resolution, three times digital zoom, and 180-degree screen view rotation. The camera tip carries an IP67 waterproof rating and adjustable LED illumination, providing sharp visual confirmation inside greasy engine bays, damp wall cavities, and mechanical ducting without needing awkward snap-on mirrors.
While the hardware console can function independently on its integrated screen, the klein et19 wifi borescope also features integrated wireless connectivity. By pairing with the Klein Tools ET19 App on iOS or Android, users can mirror the 1080p video stream, take 0.92-megapixel still photos, and immediately dispatch inspection media to property managers or clients via email or text message. The 9.8-foot armored gooseneck snake bends cleanly through structural obstacles while retaining adequate stiffness to push deep into horizontal conduit. Included hook and magnet attachments mount directly to the front of the probe tip for retrieving dropped screws or wiring harness clips.
This high-definition borescope serves commercial HVAC installers, facility maintenance engineers, and automotive technicians who need immediate image sharing alongside the reliability of an integrated screen. It eliminates the blind spots common to single-camera probes when inspecting heat exchangers or recessed valve seats. For mobile technicians who want to cut bulk down to an absolute minimum, however, a screen-free wireless wand like the ET21 offers a far lighter footprint.
No. 3 of 6 · Klein Tools
Klein Tools ET21 WiFi Borescope for Lightweight Pocket Carry
4.4 Amazon buyer average
Best for: Ultra-compact mobile inspections on phones
What the listing says
- WIFI CONNECTIVITY Wireless borescope transmits video and images directly to smartphone up to 30 feet
- COMPACT 5.5MM CAMERA High-quality inspection camera provides clear visual inspections in tight spaces and confined areas
- 5-FOOT WATERPROOF CAMERA Durable IP67-rated camera with high-flex snake maneuvers around obstacles while maintaining rigidity for pipes, walls, and…
- ADJUSTABLE LED LIGHTING Built-in adjustable LEDs capture clear images in dark environments and poorly lit inspection areas
- IOS AND ANDROID APP Download Klein Tools ET21 app to instantly connect, view, save, and share inspection images and videos
Pros
- Slim 5.5 mm camera head
- 30-foot wireless transmission range
- Works with iOS and Android
Cons
- Shorter 5-foot probe reach
- Limited to 480p capture resolution
The Klein Tools ET21 WiFi Borescope takes a minimalist approach by offloading display duties entirely to a mobile smartphone, significantly reducing pack weight for service technicians on the move. By transmitting an independent Wi-Fi signal up to 30 feet away, this compact probe connects seamlessly with the Klein Tools ET21 app on both iOS and Android hardware. Technicians can manipulate exposure settings automatically, toggle between automatic and manual shooting modes, and take advantage of an ISO light sensitivity range spanning 100 to 6400 directly from the mobile app interface.
Physical reach is driven by a 5-foot high-flex gooseneck snake that combines an IP67 waterproof rating with a narrow 5.5 mm camera head. While shorter than the 9.8-foot cables found on the console models, this snake balances structural rigidity with high-bend flexibility, allowing technicians to weave through crowded junction boxes, equipment chassis, and branch drain pipes. The camera captures video at 480p resolution and saves media in standard MP4 and JPEG formats directly to the connected phone’s local storage, ensuring immediate access for documentation or client reporting.
This compact wand is built for residential service technicians, home inspectors, and field technicians who prefer traveling light with their tools. Slipping easily into a service pouch alongside a standard klein tools set, it removes the need to carry separate charging bricks or bulky monitor frames. Technicians who routinely troubleshoot deep underground pipe lines or long ceiling drops may find the 5-foot reach restrictive, making the longer 10-foot tethered ET16 a stronger match for extended pathways.
No. 4 of 6 · Klein Tools
Klein Tools ET16 Borescope for Battery-Free Android Diagnosis
4.2 Amazon buyer average
Best for: Continuous battery-free Android phone troubleshooting
What the listing says
- DIRECT USB TYPE-C CONNECTION Connect directly to USB Type-C ports, no batteries required
- WATERPROOF IP67 CAMERA Capture high-quality 640 x 480 pixel images with the waterproof IP67, 8 mm camera
- EXTENDED REACH The armored 10-Foot (3 m) gooseneck cable allows for extended reach during inspections
- ADJUSTABLE LED BRIGHTNESS Six white LEDs with adjustable brightness control ensure optimal lighting for the best picture
- ET16 BORESCOPE APP Download the ET16 Borescope App from the Google Play store for seamless compatibility
- DIRECT USB TYPE-C CONNECTION Connect directly to USB Type-C ports no batteries required
Pros
- Direct USB-C phone connection
- Requires no internal batteries
- Armored 10-foot gooseneck cable
Cons
- Supports Android OTG devices only
- Wider 8 mm camera diameter
Designed for absolute operational simplicity, the Klein Tools ET16 Borescope ditches internal batteries, wall chargers, and wireless pairing in favor of a direct physical connection. Terminating in a standard USB Type-C plug, this digital inspection camera draws operating power directly from host Android devices running OTG 4.0 or higher. Using the dedicated ET16 Borescope App available on Google Play, users get instant plug-and-play visual output without worrying about dead internal tool batteries or wireless interference in crowded industrial facilities.
The imaging probe consists of an 8 mm IP67 waterproof camera head surrounded by six bright white LEDs with variable brightness adjustments dialed directly through the corded controller. The camera captures 640 x 480 pixel video and 0.31-megapixel still images, utilizing automatic exposure controls to adapt smoothly to shifting lighting levels inside equipment bays. It comes paired with an extended 10-foot armored gooseneck cable that delivers the longest flexible reach in the Klein lineup, along with an included hook attachment and a dedicated carrying case to keep the cord organized during transit.
The klein et16 borescope suits fleet mechanics, telecom installers, and Android-equipped field technicians who cannot afford downtime caused by uncharged battery banks. Its direct wired link ensures zero latency during precision motor inspections or behind-wall wire fishing. However, because it relies strictly on Android USB Type-C OTG architecture, technicians carrying Apple iOS devices or those requiring a narrower camera head than 8 mm will need to look toward the ET21 or ET30.
No. 5 of 6 · Klein Tools
Klein Tools ET30 Wireless Inspection Camera for Conduit and Cavity Fishing
4.4 Amazon buyer average
Best for: Long conduit fishing and wall runs
What the listing says
- 1080P HIGH RESOLUTION CAMERA Wireless inspection camera captures high resolution photos and video with clear visuals for reliable inspections
- ALWAYS-UP VIEWING AND AUTO FOCUS Image or video is consistently oriented correctly, regardless of the camera's position or rotation while auto-focus…
- COMPACT SIZE Fits into most spaces; 1-1/8-Inch holes without accessory collar and 1-1/2-Inch holes with accessory collar and…
- WIFI ENABLED AND APP COMPATIBLE View, capture, and share photos and videos in one app for real-time viewing
- FISH ROD COMPATIBLE Works with all Klein Tools fish rods plus threaded adapter to fit other brands to extend…
Pros
- Compatible with threaded fish rods
- Auto-focus with Always-Up orientation
- Sharp 1080p wireless camera
Cons
- No flexible gooseneck included
- Requires smartphone screen for viewing
The Klein Tools ET30 Wireless Inspection Camera represents a specialized departure from conventional gooseneck borescopes, targeting long-distance conduit and wall cavity navigation. Featuring a compact cylindrical housing, this Wi-Fi enabled camera connects wirelessly to both iPhone and Android devices to display sharp 1080p high-resolution photos and video. The housing is engineered with an ultra-compact footprint, fitting through 1-1/8-inch openings bare or 1-1/2-inch holes when equipped with its protective accessory collar and retrieval attachments.
Two critical optical features set this inspection camera apart: an autofocus lens system that maintains sharp clarity across changing focal distances, and an Always-Up viewing orientation that automatically balances the image so the technician never has to view upside-down feeds while spinning the probe. For extended reach inside long conduits, drop ceilings, or wall framing, the ET30 threads directly onto Klein Tools fish rods and includes a threaded adapter to fit common rod systems from other tool manufacturers. A built-in LED work light illuminates the forward inspection field, and media is captured, saved, and shared directly from the mobile app interface.
This specialized tool is best suited for commercial electricians, data-cabling installers, and rough-in contractors who regularly fish wire through long structural paths where a standard flexible gooseneck would sag or catch. Keeping this compact camera in an electrical service pouch alongside a klein metric nut driver set turns standard wire-pulling rods into live diagnostic systems. Technicians needing a free-standing semi-rigid probe that stays bent to a custom angle in open air should opt for a traditional gooseneck model like the ET20 instead.
No. 6 of 6 · Klein Tools
Klein Tools ET20 Wi-Fi Borescope for Compact Wireless Framing
4.5 Amazon buyer average
Best for: Everyday pocket carry with rechargeable power
What the listing says
- WIRELESS VIDEO TRANSMISSION WiFi Borescope transmits video and images directly to your smartphone up to 30 Feet (9 m)…
- WATERPROOF 9 MM CAMERA Capture high-quality 640 x 480 images with the waterproof 9 mm camera equipped with 6 adjustable…
- TOUGH AND FLEXIBLE GOOSENECK Maneuver around obstacles with the armored 6-Foot (1.8 m) long waterproof snake while maintaining rigidity
- ADJUSTABLE LED OUTPUT Increase or decrease camera LED output either on the Borescope or within the App for optimal…
- MULTI-FUNCTIONAL APP The Klein Borescope App acts as a display, and stores, and shares images and videos via…
- BATTERY STATUS INDICATOR Easily track the charge level of the lithium-ion battery with the battery status indicator
Pros
- Built-in rechargeable USB-C battery
- Armored 6-foot flexible gooseneck
- Convenient pocket clip design
Cons
- Wider 9 mm camera diameter
- Native 640×480 capture resolution
The Klein Tools ET20 Wi-Fi Borescope is a standalone wireless wand that bridges the gap between pocketable portability and rigid mechanical control. Connecting via an internal Wi-Fi transmitter with an operating range up to 30 feet, it pairs directly with smartphones and tablets using the Klein Borescope App. The app acts as an active monitor, storage drive, and direct sharing hub for MP4 video clips and JPEG images, making it straightforward to text or email job findings directly to clients or remote supervisors.
The tool utilizes an armored 6-foot waterproof gooseneck snake built to hold complex bends when snaking around framing studs, exhaust flues, and automotive suspension components. At the business end, a 9 mm waterproof camera head delivers 640 x 480 video resolution and 0.3-megapixel stills, backed by six adjustable white LEDs that can be dialed up or down either via physical controls on the handle or through the mobile app. Power is supplied by an integrated rechargeable lithium-ion battery charged via USB-C, complete with an LED battery status indicator on the handle and a heavy-duty pocket clip for carrying the tool on work pants or tool vest pockets.
This model suits facility maintenance workers, residential remodelers, and plumbers who need a dependable, self-powered gooseneck probe that works across both iOS and Android platforms without physical cords. Its integrated rechargeable battery eliminates reliance on phone power while keeping the tool lighter than a screen-bearing console. Where extremely tight spaces demand entry into holes smaller than 9 mm, technicians should choose the 5.5 mm ET21 or ET17 instead.
Before you choose
How to Choose the Right Klein Tools Borescope Camera
Conducting a detailed klein borescope comparison requires looking past basic visual output and focusing on how a diagnostic tool integrates into your daily workflow. The primary decision point is display architecture: choosing between a fully self-contained console like the ET17 or ET19 and a smartphone-reliant unit such as the ET21, ET16, ET30, or ET20. Self-contained units keep your personal smartphone safe from greasy hands, muddy crawlspaces, and dropped tools, while providing immediate power-on operation without wireless pairing steps. Conversely, app-driven probes take up substantially less physical space in a service bag, leverage your phone’s high-resolution screen, and allow instantaneous text or email transmission of inspection footage directly to property owners.
Probe dimensions and cable architecture dictate which environments a camera can safely access. If your work involves threading through tiny entry points, such as spark plug sockets, small electrical knockouts, or back-drilled cabinet holes, the slim 5.5 mm camera diameter found on the ET17, ET19, and ET21 is critical for preventing stuck probes. If your inspections happen inside broader plumbing lines or open stud cavities, wider heads like the 8 mm ET16 or 9 mm ET20 deliver durable armored protection. For pulling cable across broad spans or inside conduits, the threaded fish-rod mounting design of the klein et30 inspection camera replaces gooseneck limitations with rigid, pushable distance.
Cable length and rigidity also establish clear operational boundaries. A high-flex 5-foot snake like the ET21 offers exceptional agility around tight 90-degree elbows but lacks the stiffness needed to push through a long, straight horizontal run. For reaching deeper into branch drains, commercial duct banks, or deep chases, the 9.8-foot and 10-foot armored cables on the ET17, ET19, and ET16 provide the forward column strength required to drive the camera head across extended distances.
Finally, consider how the unit is powered during long work shifts. The ET16 requires no internal charging whatsoever because it draws operating power straight through your Android phone’s USB-C port, making it immune to dead battery syndrome on remote job sites. The ET20 features an integrated lithium-ion battery with a clear fuel gauge, while the standalone ET17 and ET19 consoles house dedicated internal power systems recharged via USB-C. Evaluating these power strategies against the mobile device you already carry helps determine which klein borescope to buy for your service kit.
Questions people ask
FAQ
Can Klein Tools borescope cameras record both still images and video files?
Yes. Every borescope in this lineup supports capturing both still images in standard JPEG format and continuous video recordings in MP4 format. Units with built-in screens save media internally or export files via a USB-C interface to a PC, while app-compatible Wi-Fi and tethered models save visual files directly to your connected smartphone or tablet for immediate sharing.
Which Klein borescope is best suited for working in narrow engine bays or small pipes?
The Klein Tools ET17, ET19, and ET21 are the most capable models for tight openings thanks to their ultra-slim 5.5 mm camera heads. These compact tips slip easily through spark plug wells, narrow conduit bends, and small access holes that completely block larger 8 mm or 9 mm camera housings.
Do all Klein Wi-Fi borescopes work on both iPhone and Android devices?
The wireless Wi-Fi models—including the ET19, ET21, ET30, and ET20—feature companion applications available on both Apple iOS and Google Play Android platforms. However, the corded ET16 Borescope is strictly limited to Android hardware running OTG 4.0 or higher with a USB Type-C connection.
How does a fish-rod inspection camera differ from a traditional gooseneck borescope?
Traditional goosenecks use a semi-rigid metal snake that holds manual bends, allowing you to curve the probe into machinery or around P-traps. The ET30 wireless camera lacks a gooseneck; instead, it screws directly onto rigid fiberglass fish rods, allowing technicians to push the illuminated sensor through long straight runs of electrical conduit, drop ceilings, or wall cavities.
Can the camera cables on Klein borescopes be submerged in water?
The camera heads and flexible gooseneck snakes on the ET17, ET19, ET21, ET16, and ET20 are rated IP67 waterproof, meaning they can be temporarily submerged in water while inspecting clogged drains or wet pipes. However, the handheld monitor housings and phone interface handles are not rated for full water submersion and must be kept dry.
Prices, specifications and the feature lines above are read from the product listing and can change without notice. Every score is the average rating Amazon buyers left for that item; nothing on this page is written from handling the product.
