Extended-Reach Precision for Deep Access Diagnostics The Teslong TD450S-3M brings the same 180° articulating clarity you trust to a specialized form factor designed for extended reach and ultra-tight clearances. With a 6.5mm diameter probe and 3 meters of pushable cable, this variant extends your diagnostic capability into deep HVAC duct runs, lengthy plumbing lines, and compact engine architectures where space is at an absolute premium. Deep-Cavity Visibility, Zero Guesswork For HVAC professionals tracing heat exchanger cracks through full furnace assemblies, or mechanics diagnosing rear-cylinder issues without cab removal, the 3m cable maintains the optimal stiffness-to-flexibility ratio needed to transmit push force over distance. The bi-directional articulating tip—controlled via the same intuitive thumb lever as our standard models—allows precise orientation once you've navigated to the inspection point, whether that's three meters inside a wall cavity or deep within a V-engine valley. Access Without Compromise The 6.5mm ultra-slim profile is specifically optimized for modern high-performance engines with restrictive port access—slipping through 14mm spark plug tubes, diesel injector ports, and narrow fuel rail gaps with minimal clearance. Combined with the extended reach, you can now inspect piston crowns and cylinder walls in compact inline engines, or navigate complex pipe geometries, without the need for multiple access points or invasive disassembly. Standalone Professional Performance Like all TD450S series units, this tool features a self-contained 4.5" HD IPS display—no phone pairing required—ensuring instant, lag-free visibility in shop environments. The integrated LED array provides adjustable illumination for dark cavities, while the IP67-rated camera head handles wet conditions in drainage or condensation-heavy systems. Record 1080P video with audio narration or capture high-resolution stills directly to the included 32GB microSD card for documentation and client reporting. Built for Specialized Applications The 3M Ultra-Slim excels in scenarios requiring both extended reach and reduced diameter: inspecting commercial HVAC risers, investigating water heater internals, retrieving dropped components from deep engine bays, or surveying extensive wall cavities during renovation. The dual-layer cable construction—flexible for articulation, semi-rigid for pushability—ensures you maintain control across the full 3-meter span. Complementary Capability As part of the comprehensive TD450S inspection ecosystem, this extended-reach model complements our standard-length configurations. Select the 3M Ultra-Slim when your work demands maximum penetration depth combined with minimal entry diameter—ensuring you have the right tool specification for every diagnostic challenge, from surface-level inspections to deep-system analysis.

• Adjustable Lighting for Confident Inspections: High-brightness LED lights built into the probe illuminate dark, enclosed spaces with ease. Adjust the brightness to avoid glare and reveal fine cracks, corrosion, or blockages with clarity.
• One-Hand Control Designed— Thumb Steers, Index Finger Captures: A centrally positioned articulating joystick allows smooth, intuitive one-handed steering—comfortable for both left- and right-handed users. The rear multifunction button lets you switch lenses or capture photos and videos without shifting your grip. Lightweight and well-balanced, it’s built for longer inspections without hand fatigue.

Specifications

Common questions