These phone sets are professionally made with the highest quality parts, 100% ready to use right out of the bag and designed to check for continuity and loop check. Made for electricians to work on non-energized single conductor cables and multi conductor cables no matter how long they are. Includes a super bright LED push button that lets you know when continuity is complete, 12V internal battery, Velcro ties to secure wire leads, heavy duty kink less test leads, phone storage bag, and support on how to use the thru our email or phone. Master phone and secondary phone has screw-on alligator clips and right-angle input jacks making them ideal for control panels, I/O panels and MCC’s. Communicate two people loud and clear, no noise or interference. If you have any question, please feel free to contact us.
**WARNING/CAUTION/DANGER**Do NOT use on LIVE circuits or energized wires of any voltage. Misuse may result in serious injury or death. We are NOT responsible for any misuse that leads to personal injury, property damage, damage to the phones or any other equipment of any kind.