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The Automotive Relay Tester is a professional, convenient diagnostic tool for relay faults, suitable for vehicle maintenance, electrical inspections and routine servicing. This instrument combines battery voltage monitoring with relay performance testing, supporting 12V to 24V systems and compatible with both 4-pin and 5-pin relays. Featuring digital readouts, intelligent diagnostics and an integrated shock-resistant design, it serves as an efficient assistant for automotive technicians and DIY enthusiasts.
Core Functional Highlights
✅ 1. Dual-Mode Integrated Testing
Battery Voltage Monitoring: Connects to the battery for real-time voltage display (11V–25V range), enabling precise power status monitoring.
Relay Performance Testing: Automatically performs 10-cycle engagement/release tests to intelligently determine relay functionality.
✅ 2. Universal Relay Compatibility
Supports both 4-pin and 5-pin relays, covering the vast majority of automotive relay types on the market.
Switch between modes instantly via the rotary selector knob for simple, intuitive operation.
✅ 3. Intelligent Diagnostics with Dual-Colour Indication
Green light: Relay functions correctly with consistent operation and acceptable response time.
Red light: Relay malfunction or unstable performance; replacement required.
Automatically detects ‘release time’ during testing; reports error upon timeout.
✅ 4. Integrated Shockproof Alligator Clips
Approx. 2.1cm jaw width with strong clamping force, ensuring secure battery terminal connection and preventing slippage or dislodgement.
Silicone insulated handles offer safety and durability for prolonged, stable testing.
✅ 5. Digital Display and Portable Design
Clear LCD shows real-time voltage for intuitive readings.
Compact body (approx. 4.6cm × 2.7cm) with 42cm alligator clip leads, suitable for confined spaces like engine bays.
Operation Steps (Simple Three-Step Process)
Connect power: Securely attach alligator clips to battery terminals (positive and negative), screen displays current voltage.
Select the pin configuration: Rotate the selector knob according to the relay's pin count (4-pin or 5-pin).
Initiate testing: Insert the relay, press the ‘TEST’ button, and the device will automatically complete the test, indicating the result via illuminated indicators.
Technical Specifications
Input Voltage: 12V ~ 24V (suitable for car/lorry/motorcycle batteries)
Compatible Relays: 4-pin, 5-pin
Coil Resistance: ≥200Ω
Display: Digital voltage readout
Cable Length: 42cm
Indicator: Dual-colour red/green LED
Housing Material: Insulated silicone + ABS
Applications
Rapid fault diagnosis in automotive workshops and dealerships
Relay performance checks during vehicle maintenance
Electrical system teaching and practical training
Self-service relay and battery status checks by vehicle owners
Why Choose?
🔧 Professional efficiency: Completes full relay testing in 10 seconds, boosting repair productivity.
🔋 Dual functionality: Simultaneously measures battery voltage and relays with one device, eliminating extra tools.
🛡️ Safe and stable: Integrated anti-vibration design prevents loosening or false readings during testing.
📦 Versatile: Compatible with most 12V/24V vehicle relays for multi-purpose use.
Package Contents
ANENG RT01 Main Unit ×1
Integrated Alligator Clip Cable ×1
User Manual (Chinese/English)
Rapid diagnostics, safe and reliable – ANENG RT01, your trusted automotive electrical testing expert!
