12V Automotive Relay Tester – Universal Electronic Relay Diagnostic Tool for Sale

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12V Automotive Relay Tester – Universal Electronic Relay Diagnostic Tool For Sale

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12V Automotive Relay Tester – Universal Electronic Relay Diagnostic Tool:
$18.38

ANENG RT01 Automotive Relay Tester (11V-25V)The RT01 Automotive Relay Tester is a fast and convenient diagnostic tool designed to check the condition of common automotive relays quickly and accurately. Compatible with most standard 4-pin and 5-pin relays, this tester helps identify faulty relays before they cause electrical problems in your vehicle.
Perfect for mechanics, workshops, and DIY users, the RT01 automatically detects relay pin configuration, measures response and release times, and checks relay consistency through multiple test cycles. Clear LED indicators provide instant test results, making relay diagnosis simple and efficient.
Key Features
• Quickly tests automotive relays for faults and failures• Compatible with most 4-pin and 5-pin relays• Supports vehicle battery voltage from 12V to 24V• Automatically detects relay pin configuration• Performs multiple test cycles for reliable results• Green and red LED indicators for instant status response• Easy plug-and-test operation• Compact and durable ABS housing
Fast & Accurate Relay Diagnostics
The RT01 automatically checks relay operation by analyzing pin positions, switching response time, release timing, and overall consistency. This allows you to quickly determine whether a relay is functioning properly or needs replacement.
LED Status Indicators
• Green LED: Relay operating normally• Red LED: Relay faulty, unsupported, or abnormal
The clear indicator system allows quick diagnosis without complicated procedures.
Easy to Use
1. Connect the alligator clips to the vehicle battery • Red clip to positive terminal • Black clip to negative terminal
2. When the red LED lights up, the tester is ready
3. Select the correct socket based on relay type • 4-pin relay socket • 5-pin relay socket
4. Insert the relay into the tester
5. Press the “Test” button
6. The tester will automatically perform relay diagnostics and display results using LED indicators
7. After testing, disconnect the clips and remove the relay
Specifications
• Product Model: RT01• Relay Compatibility: 4-pin & 5-pin relays• Operating Voltage: 12V–24V• Supported Coil Resistance: ≥20Ω• Power Source: Vehicle battery connection• Display Type: Digital bright display screen• Housing Material: ABS Plastic
Alligator Clips
• Clip Opening Size: 2.1 cm / 0.82 inch• Cable Length: 42 cm / 16.54 inch
Product Size
• Approx. 139 × 63 × 27 mm• Approx. 5.47 × 2.48 × 1.06 inch
Wide Compatibility
Suitable for testing relay systems in:
• Cars• Trucks• Vans• SUVs• Automotive electrical systems
Important Notes
• Vehicle battery voltage must be between 12V and 24V• Recommended relay coil resistance should be 20Ω or higher• Designed for automotive relay testing applications only
The RT01 Relay Tester is a practical tool for quickly checking relay performance, helping save time during troubleshooting and preventing unnecessary parts replacement.

On Jun 29, 2026 at 02:23:35 PDT, seller added the following information:

On Aug 3, 2026 at 02:03:24 PDT, seller added the following information:

On Aug 5, 2026 at 02:32:22 PDT, seller added the following information: