Lanrui M191 Universal Switch Clip

The Lanrui M191 Universal Switch Clip is an advanced professional-grade mobile repair diagnostic tool specially designed for technicians who need fast, accurate, and efficient motherboard testing without opening or disassembling the device. It allows repair engineers to quickly power on smartphones, tablets, and motherboards while monitoring current flow and detecting possible faults during the testing process. The tool is widely used for identifying short circuits, abnormal current consumption, restart issues, leakage problems, and power-related motherboard faults, making troubleshooting much faster and more convenient.

Built for compatibility and ease of use, the Lanrui M191 supports a wide range of Android devices, iPhone models, dual-cell smartphones, and iPads, making it a versatile solution for modern repair environments. Its intelligent detection mode provides real-time current indication through LED prompts, helping technicians analyze motherboard behavior more accurately during diagnostics. The compact and user-friendly design makes it highly suitable for mobile repair shops, refurbishing centers, second-hand device inspection businesses, and professional maintenance laboratories where speed and reliability are essential.

Key Features 

• Universal switch clip for quick mobile phone and tablet power-on testing
• Eliminates complicated manual startup procedures for faster diagnostics
• Compatible with all major non-encrypted Android devices
• Supports the complete range of iPhone models
• Works with various non-encrypted dual-cell devices and iPads
• No motherboard disassembly required for current testing
• Helps detect short circuits, leakage issues, restart faults, and unstable current flow
• Suitable for mobile repairing shops, refurbishment centers, and motherboard troubleshooting

Dual Working Modes
Detection Mode

Activate the switch to enable intelligent current detection mode.

• Displays a slight standby current of approximately 0.01A
• Indicator light illuminates when current passes through
• Helps technicians quickly identify motherboard faults and abnormal current behavior

Power-On Mode

Disable detection mode for standard power-on functionality.

• No indicator light during current flow
• No microcurrent output
• Useful for checking motherboard leakage and power abnormalities

Intelligent Fault Indication

• Flashing indicator light signals unstable motherboard power supply or automatic restart conditions
• Assists in diagnosing faults even when the phone screen is damaged
• Excellent tool for repair testing, recycling inspection, and used device verification

Applications

• Mobile phone motherboard testing
• Tablet power diagnostics
• Current leakage detection
• Short circuit troubleshooting
• Second-hand device inspection
• Repair lab and technician use

Package Includes

• 1 × Lanrui M191 Universal Switch Clip