- Save 50% Testing Time: Supports wireless remote operation or on-device button control, allowing flexible use at both long and short distances. No need to walk back and forth or require multiple people, significantly saving testing time. One person can efficiently complete trailer testing.
- Wide Compatibility: The trailer light tester box is compatible with various 7-way round trailer plugs. No additional adapters are required, easily meeting the testing needs of different types of trailers.
- Safe and Convenient: Built-in short-circuit protection and overload protection effectively prevent equipment damage and ensure safe use. Equipped with a 12V 10Ah LiFePO4 rechargeable battery, it does not require frequent charging and can be used independently even in remote areas without an external power source.
- Comprehensive Electrical System Testing: The trailer light tester can test all trailer lighting functions, including turn signals, brake lights, tail lights, and reverse lights, accurately verifying wiring configurations to ensure the safety and reliability of the trailer electrical system and avoid road failures.
- Compact and Portable: Made of a durable, weather-resistant all-metal housing with an IP68 protection rating, it can withstand harsh working environments such as snow, rain, dust, high temperatures, and vibration. Upgraded to a compact structural design, making it smaller and easier to carry and store.

All-in-One Trailer Testing, Made Simple
Test smarter, not harder. This trailer tester box lets you quickly check lights, electric brakes, and wiring with remote control convenience, built-in battery power, and wide connector compatibility. One tool, total confidence—anywhere, anytime.

One-Person Testing. Zero Back-and-Forth.
Control the tester remotely and handle the entire inspection by yourself. No running back and forth, no extra help needed—just faster testing and higher efficiency on every job.

Built-In Power for Anywhere You Work
With a 12V 10Ah rechargeable LiFePO4 battery, this tester works without external power. Perfect for roadside checks, job sites, and remote areas where outlets aren’t available.

Button Control or Remote—Your Choice
Use the button for quick checks or switch to the wireless remote for long-distance operation. Flexible control that adapts to every testing situation.

One Device for Testing All Types of Trailers
The trailer light tester box is compatible with various 7-way round trailer plugs. No additional adapters are required, easily meeting the testing needs of different types of trailers.

Professional Trailer Light Tester, Wireless Remote One-Person Operation, Built-in 12V 10Ah Rechargeable Battery, IP68 Waterproof All-Metal Housing, Compatible with 7-Way Round Pin Connector
Vendor: Zuomeng
SKU: ZM-004
Processing Time
All orders placed on Zuomeng.shop are processed within 0–1 business day. Orders are not processed, shipped, or delivered on weekends or U.S. holidays.
During periods of high order volume, processing and shipping times may be slightly delayed. If there is a significant delay with your order, we will notify you via email with the latest updates.
Shipping Time
We provide free standard shipping for all orders within the United States.
- Processing Time: 0–1 business day
- Estimated Delivery Time: 3–5 business days after order confirmation
Please note that delivery times may vary slightly depending on the carrier, weather conditions, and other unforeseen circumstances. Once your order has been shipped, you will receive a confirmation email with tracking information.
All returns must be requested within 30 days of the received date in unused, pristine condition with original packing and all parts inside.
We support paypal, credit card payment.
- Save 50% Testing Time: Supports wireless remote operation or on-device button control, allowing flexible use at both long and short distances. No need to walk back and forth or require multiple people, significantly saving testing time. One person can efficiently complete trailer testing.
- Wide Compatibility: The trailer light tester box is compatible with various 7-way round trailer plugs. No additional adapters are required, easily meeting the testing needs of different types of trailers.
- Safe and Convenient: Built-in short-circuit protection and overload protection effectively prevent equipment damage and ensure safe use. Equipped with a 12V 10Ah LiFePO4 rechargeable battery, it does not require frequent charging and can be used independently even in remote areas without an external power source.
- Comprehensive Electrical System Testing: The trailer light tester can test all trailer lighting functions, including turn signals, brake lights, tail lights, and reverse lights, accurately verifying wiring configurations to ensure the safety and reliability of the trailer electrical system and avoid road failures.
- Compact and Portable: Made of a durable, weather-resistant all-metal housing with an IP68 protection rating, it can withstand harsh working environments such as snow, rain, dust, high temperatures, and vibration. Upgraded to a compact structural design, making it smaller and easier to carry and store.

All-in-One Trailer Testing, Made Simple
Test smarter, not harder. This trailer tester box lets you quickly check lights, electric brakes, and wiring with remote control convenience, built-in battery power, and wide connector compatibility. One tool, total confidence—anywhere, anytime.

One-Person Testing. Zero Back-and-Forth.
Control the tester remotely and handle the entire inspection by yourself. No running back and forth, no extra help needed—just faster testing and higher efficiency on every job.

Built-In Power for Anywhere You Work
With a 12V 10Ah rechargeable LiFePO4 battery, this tester works without external power. Perfect for roadside checks, job sites, and remote areas where outlets aren’t available.

Button Control or Remote—Your Choice
Use the button for quick checks or switch to the wireless remote for long-distance operation. Flexible control that adapts to every testing situation.

One Device for Testing All Types of Trailers
The trailer light tester box is compatible with various 7-way round trailer plugs. No additional adapters are required, easily meeting the testing needs of different types of trailers.

