Electronic Car Battery Tester 12V with LCD Screen Fast & Accurate Battery Check

Summary

• WEATHER RESISTANT CONNECTION: This waterproof junction box provides a waterproof sealing to defend outdoor and indoor plug connections from water, snow, rain, dust, and dirt, ensuring circuit safety (only waterproof, do not submerge it in water).
• SPACIOUS AND ADJUSTABLE COMPARTMENTS: The large casing can accommodate multiple connections and one to one connections; compatible with AWG 12 14 16 extension cords and flat cables; slide the adjustable limiter to fit different lengths of connections.
• SECURE AND TIGHT CONNECTION: The rubber seals at both ends fit well with the power cord; 2 clips securely fasten the wires in place; the adjustable anti slip sawtooth ensures a secure connection even when the power cord is pulled during use, preventing the plug from sliding or disconnecting.
• DOUBLE LOCKING AND PROTECTION: The top cover and 4 additional durable locks enhance the outdoor extension cord's safety and sealing; the 4 lockable locks secure the power cord junction box, even if the top cover breaks, it can still be used safely.
• EASY TO USE: No tools or installation required; correctly place the extension cord; slide the limiter to maintain a secure wire connection; lock the top cover and 4 locks for sealing; hanging it to save space; perfect for holiday lights, light strings, pool pumps, and gardening tools.