Extech CT20 Remote and Local Continuity Tester, green

Continuity tester, length 3.6 in., Function checks local continuity, remote continuity, and remote polarity, with power off, features pocket-sized, light weight, low power consumption, high quality rugged design, dual color (red/Green) remote probe for polarity identification, battery type 9v, includes 9 in.Test leads, remote dual color led probe with 11 in.Test leads, 9v battery, carrying case, and instructions.'