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<div>Welcome to our store! We hope you have a wonderful shopping experience!</div>

<ul><li>The importance of relay testing: Most car lights, wipers, starters, air conditioners, electric seats, electric doors and windows, anti-lock brakes, and o systems all use relays. Automotive relays are exposed to vibration, high temperature, low temperature, and humidity, which can reduce their lifespan. If a relay fails, it may cause immediate system failure or r the vehicle inoperable. Regular relay inspection is essential for reliable vehicle operation. 
This relay tester checks the functionality of relay contacts by connecting to a car battery (11V–15V) via the relay coil. 
Features: 
- Automotive relay testing tool 
- Applies continuous voltage from a car battery (11V–15V) to the relay coil to verify contact function 
- Enables observation of contact behavior, closure time, and relay performance during each test phase 
- Tests the proper operation of relay switching 
- Red LED illuminates if the relay is faulty; green LED indicates normal operation 
- Well-constructed design for reliable performance 
- Simple to operate 
- Compact and portable 
- Durable for long-term use 
 
- Material: Plastic and metal 
- Color: Black and red 
- Voltage: 12V 
- Size: Approx. 110 x 60 x 28mm 
- Product name: Automotive relay tester 
Five key advantages: 
1. Safe and environmentally friendly 
2. Durable construction 
3. Cost-effective design 
4. Resistant to extreme temperatures 
5. Lightweight and practical 
Note: 
- Requires a 12V car battery with voltage between 11V and 15V 
- Relay coil resistance should be at least 20 ohms 
How to use: 
1. Connect the power leads to the car battery — black alligator clip to the negative terminal, red alligator clip to the positive terminal. 
2. The tester powers on and the red LED illuminates. 
3. Inspect the relay before inserting. For a 4-pin relay, select "4 pin" on the tester. For a 5-pin relay, select "5 pin." 
4. Insert the relay into one of the three receptacles. 
5. Press the "TEST" button. 
6. The tester identifies the pin configuration of the relay. If the relay does not match common automotive types or has damaged pins, the red LED will light. 
7. If the pin configuration is correct, the tester cycles the relay 10 times, measuring contact closure and opening times. If timing exceeds limits, the red LED lights immediately. 
8. After 10 cycles, the tester evaluates relay consistency. A passing test lights the green LED; a failed test lights the red LED. 
9. Disconnect the power leads from the battery and remove the relay. 
Package includes: 
1 x 12V relay tester</li></ul>

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12V Automotive Relay Tester for Battery and Alternator Diagnostics Tool

The importance of relay testing: Most car lights, wipers, starters, air conditioners, electric seats, electric doors and windows, anti-lock brakes, and o systems all use relays. Automotive relays are exposed to vibration, high temperature, low temperature, and humidity, which can reduce their lifespan. If a relay fails, it may cause immediate system failure or r the vehicle inoperable. Regular relay inspection is essential for reliable vehicle operation. 
This relay tester checks the functionality of relay contacts by connecting to a car battery (11V–15V) via the relay coil. 
Features: 
- Automotive relay testing tool 
- Applies continuous voltage from a car battery (11V–15V) to the relay coil to verify contact function 
- Enables observation of contact behavior, closure time, and relay performance during each test phase 
- Tests the proper operation of relay switching 
- Red LED illuminates if the relay is faulty; green LED indicates normal operation 
- Well-constructed design for reliable performance 
- Simple to operate 
- Compact and portable 
- Durable for long-term use 
 
- Material: Plastic and metal 
- Color: Black and red 
- Voltage: 12V 
- Size: Approx. 110 x 60 x 28mm 
- Product name: Automotive relay tester 
Five key advantages: 
1. Safe and environmentally friendly 
2. Durable construction 
3. Cost-effective design 
4. Resistant to extreme temperatures 
5. Lightweight and practical 
Note: 
- Requires a 12V car battery with voltage between 11V and 15V 
- Relay coil resistance should be at least 20 ohms 
How to use: 
1. Connect the power leads to the car battery — black alligator clip to the negative terminal, red alligator clip to the positive terminal. 
2. The tester powers on and the red LED illuminates. 
3. Inspect the relay before inserting. For a 4-pin relay, select "4 pin" on the tester. For a 5-pin relay, select "5 pin." 
4. Insert the relay into one of the three receptacles. 
5. Press the "TEST" button. 
6. The tester identifies the pin configuration of the relay. If the relay does not match common automotive types or has damaged pins, the red LED will light. 
7. If the pin configuration is correct, the tester cycles the relay 10 times, measuring contact closure and opening times. If timing exceeds limits, the red LED lights immediately. 
8. After 10 cycles, the tester evaluates relay consistency. A passing test lights the green LED; a failed test lights the red LED. 
9. Disconnect the power leads from the battery and remove the relay. 
Package includes: 
1 x 12V relay tester