Product Introduction
Trailer light tester box with built-in 12V 12Ah battery – test trailers directly. Includes 3 types of test connectors: 7-way flat (spade) pin, 6-way round pin.

Product Features
📡 Upgraded Remote Control – 98 ft Range
Flip local control switch to remote mode. Troubleshoot trailer faults right from your stool – simple remote operation.
🔋 Complete Testing System
Checks electric brakes and all trailer lighting functions: turn signals, brake lights, tail lights, reverse lights. Accurately verifies wiring – ensures safe, dependable electrical system.
🛡️ Security & Protection
Built-in 12V battery with short-circuit and overload protection. Waterproof housing (IPX8) – no worries if caught in rain while testing.

Product Specifications
- Product Name: Trailer Light Tester Box – 12V Portable
- Battery: Built-in 12V 12Ah rechargeable
- Functions Tested: Turn signals, brake lights, tail lights, reverse lights, electric brakes
- Protection: Short-circuit & overload protection
- Use: Shop, field, roadside trailer testing

Packaging Includes
- 1 × Trailer Light Tester Box
- 1 × 12V 12Ah Battery (installed)
- 1 × 500mA Power Cord
- 1 × Adapter
- 1 × Remote Control (battery not included)
- 1 × User Manual
✨ Remote test, IPX8, all connectors – trailer light troubleshooting from 98 ft away!