Features: Non-contact and pen shaped desigh,convenient to operate and carry. Totally insulated, no exposed metal or conductive parts. Includes LED flashlight,convenient to use at night or dark environment. Auto shut-down if it is not detected within 5 minutes. Ideal design for testing power cables, circuit breakers, wall sockets and so on. A perfect tool kit for home and electric industry uses. Specification: Material: ABS + PC Color: Blue, Yellow Power by: 2*AAA battery(not include) Package includes: 1 x Tester Pencil