TEST T568A, T568B (AT&T 258A/10 Base T), and USOC wiring. Connect 8-pin mod plug to transmitter and receiver.
IDENTIFY open, short, reversed, and transposed pairs. Send tone to identify cable at remote locations.
TONE FREQUENCY: 850 and 950 Hz alternating nominal. Tone output: 9V p-p open circuit
VOLTAGE PROTECTION: Transmitter, 52 VDC 90V p-p (up to 10 minutes); Receiver, 52 VDC momentary.
POWER: One 9V battery, nominal life 2000 hrs (no load). Battery operated, 9V not included