NY – The Whirlwind Power Link TLT (Tester Line-True) is a dedicated test device for Neutrik True One® three wire power cords. It’s a battery-powered continuity tester that conveniently verifies the condition of power cables that are difficult to test without applying dangerous line voltage.
More details from (http://whirlwindusa.com/):
Each of the three conductors is tested for continuity, shorts, and incorrect connections. Testing cables is as easy as plugging them in. The TLT has three green and one red LED that indicate correct wiring or any fault conditions. Operation is hands-free; there are no buttons to push or knobs to turn. A properly wired line cord will show all three green LEDs illuminated. The earth LED light comes on before the Neutral and Line LEDs to confirm the Earth connection making first and breaking last. The Whirlwind TLP is powered by a single 9V battery located inside the unit and has a test function. Also launched is the TLP (Tester Line-Pcon) for Neutrik powerCON® three wire power cords.