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SML500 Automotive Smoke Leak Detector

The SML500 is a high-end touchscreen automotive smoke leak detector from AUTOOL. It supports dual testing modes: Pressure Holding Mode (Air Mode) and Smoke Leak Detection Mode, with an external air source. Equipped with a high-definition LCD touchscreen, intelligent pressure control, and a temperature control system, it delivers stable and continuous smoke output. It is mainly used for detecting leaks in intake vacuum pipelines, EVAP systems, exhaust systems, crankcase ventilation systems, and cooling pipelines. Compatible with gasoline vehicles, new energy vehicles, motorcycles, and light trucks, it can quickly detect various automotive pipeline leakage faults.

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Product Features

Color Touchscreen, Customizable Pressure Threshold:

Touchscreen operation eliminates the need for repeated knob adjustments. The pressure holding threshold can be freely customized instead of being limited to a fixed 3-minute mode. Once the test is completed, the screen directly displays the result: Pass / Leak Detected. Pressure values are clearly visualized. Parameters can be adjusted as needed for low-pressure EVAP system testing and high-pressure exhaust system testing, allowing the device to adapt to the OEM testing standards of more vehicle models.

Dual-Mode Operation:

① Pressure Holding Mode (Air Mode): Outputs compressed air only, without smoke. Perform a pressure decay test first to determine whether a leak is present. If there is no leak, no smoke oil is consumed. It can also be used to purge pipelines and check the sealing of plugs. This mode is recommended for EVAP system testing.
② Smoke Leak Detection Mode: Uses low-oxygen smoke generation technology to produce smoke quickly, with dense and uniform smoke output. Even 0.1mm micro-cracks can be visually identified for accurate leak location.

Built-in High-Power Air Pump, No External Air Compressor Required:

Simply connect the device to a 12V vehicle battery to operate. It can be used both in workshops and for roadside assistance, eliminating the limitations of air compressor hoses.

Intelligent Pressure Stabilization + Multiple Safety Protections:

Intelligent pressure control provides stable output pressure and prevents high-pressure damage to sensitive vehicle pipelines. Built-in temperature protection automatically cuts off the power when the temperature becomes too high, preventing the smoke generation chamber from overheating during extended operation. It is suitable for high-frequency use in repair shops.

Compatible with Multiple Vehicle Types, Suitable for Various Pipeline Sizes:

With a wide adjustable pressure range, it can perform low-pressure testing of EVAP systems and high-pressure testing of exhaust and cooling systems. It is compatible with passenger cars, SUVs, diesel vehicles, new energy vehicles, motorcycles, ATVs, and more. Comes standard with a complete set of inflatable bladder plugs and multiple adapters, eliminating the need for additional accessories for most pipeline openings.

Durable Metal Housing, Low Maintenance Cost:

The all-metal housing provides excellent durability and impact resistance. Low smoke oil consumption and an easy-to-maintain and replace smoke generation chamber help keep long-term operating costs under control.

3-Year Warranty
For equipment damage caused by non-human factors, AUTOOL provides free replacement parts within three years. If you have any questions, please feel free to contact us—we will respond within 24 hours. We are committed to being responsible for our products, our customers, and our partners.

SML500
Power Supply DC 12V Vehicle Power Supply
Air Source External Air Source
Working Modes Pressure Holding Leak Test Mode, Smoke Leak Detection Mode
Pressure Range 0-500KPa (Customizable pressure holding threshold; screen automatically determines test results)
Screen LCD Color Touchscreen, Digital Pressure Display
Protection Intelligent Temperature Control, Overheat Auto Power-Off Protection

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