The Klein Tools ET20 is a WiFi borescope featuring a 9 mm IP67-rated camera head on an armored gooseneck cable with on-board LED lighting. The unit streams 640 x 480p live video wirelessly to iOS and Android smartphones via the free Klein Tools app, with no physical display on the device body. The rechargeable lithium-ion battery delivers up to 5.5 hours of runtime and the body meets IP42 ingress protection with a 3-meter drop rating. Suited for electrical, HVAC, plumbing, and aircraft inspection. Includes hook attachment and carrying case. Covered by Klein Tools' 1-year limited warranty.
How does the ET20 stream video to a phone?
The ET20 creates its own WiFi hotspot. Connect your iOS or Android phone to the ET20's network via WiFi settings, then open the Klein Tools inspection app to view the live feed. No internet connection is required — the link between device and phone is direct.
Does the ET20 have a built-in display?
No — the ET20 requires a phone or tablet to display the camera feed. For display-integrated operation, the ET17, ET18, or ET19 include built-in screens. The ET20's phone-dependent design results in a more compact and lighter body.
What waterproof protection does the ET20 provide?
IP67 at the camera head and cable — rated for 1-meter immersion for 30 minutes. The handle body carries IP42 (splash-resistant), not immersion-rated. For camera submersion, keep the handle above the waterline.
How does the ET20's 9 mm diameter compare to the 5.5 mm models?
The 9 mm diameter does not fit spaces below approximately 3/8 inch, unlike the 5.5 mm ET17/ET18/ET19. However, 9 mm provides a wider field of view and more LED surface area for illumination in larger pipe sections, duct openings, and wall voids. Choose 5.5 mm for tight access; 9 mm for broader coverage in larger spaces.
What is the battery type, and how long does it last?
Built-in rechargeable lithium-ion battery — no disposable batteries required. This is an advantage for frequent use where battery cost and availability are concerns. Consult the included documentation for rated runtime per charge.
# Klein Tools® ET20 WiFi Borescope **Model:** `ET20` **Brand:** Klein Tools **Category:** Borescope > The Klein Tools ET20 is a WiFi borescope featuring a 9 mm IP67-rated camera head on an armored gooseneck cable with on-board LED lighting. The unit streams 640 x 480p live video wirelessly to iOS and Android smartphones via the free Klein Tools app, with no physical display on the device body. The rechargeable lithium-ion battery delivers up to 5.5 hours of runtime and the body meets IP42 ingress protection with a 3-meter drop rating. Suited for electrical, HVAC, plumbing, and aircraft inspection. Includes hook attachment and carrying case. Covered by Klein Tools' 1-year limited warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Borescope | | Camera Diameter Mm | 9 | | Resolution Pixels | 640x480 | | Wifi | Yes | | Compatible Devices | iOS and Android (via WiFi app) | | Display Included | No | | Waterproof Rating | IP67 (camera/cable); IP42 (body) | | Battery Type | Lithium-Ion rechargeable | | Overall Length In | 7.3 | | Assembled Weight Oz | 20 | | Barcode (UPC) | 092644692314 | | Warranty | 1-year limited | ## What's Included - Rechargeable borescope - USB charging cable - Hook attachment - Instructions - Carrying case Source: https://www.jaspecs.com/klein-tools/borescope/et20-klein-tools-wifi-borescope/