Klein Tools ET450 Inspection Camera

The ET450 uses a 5.5mm-diameter camera head on a flexible probe, small enough to thread into electrical conduit, wall cavities, and behind appliances where a phone camera simply can't reach. Images display live on its built-in 3.5-inch screen.

Yes, the probe carries a waterproof rating, so it can inspect damp conduit, drains, and plumbing areas — but the display unit itself is not submersible and should stay dry. That's typical of inspection cameras from Klein, Ryobi, and most consumer-grade rivals.

Yes, it captures still images and video clips so you can document findings for a client or compare conditions over time. The built-in screen means you review footage on-device without needing an app or phone pairing.

The ET450's dedicated 3.5-inch screen means no Bluetooth pairing, no app crashes, and it works with gloves on — a real advantage on job sites. Klein Tools is a family-owned American hand tool maker founded in 1857, and the ET450 typically costs well below Milwaukee's M12 inspection camera setup, which requires buying into that battery platform.