Description Are you looking for a professional, yet reasonable electrical tester pen? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our electrical tester screwdriver must meet your needs, this electrical tester pen is one of the best choices for you. Features -Color:As Shown -Material:ABS, LED, zinc alloy -Size:14.00X2.00X1.60cm/5.50X0.79X0.63in Direct test range: AC DC 70-250V Induction test range: within 1000V Light color: single - Professional , no obvious heat when working, comfortable to grip. - Compact structure, small in size, with pen clip design, easy to carry and use. - Self-test function usage: self-test before use, hold the pen tip in one hand, and touch the touch electrode with the other hand. - Self-test result: When the light is on, it means that the electric pen is normally fully charged, and if it is not on, it means that the battery needs to be replaced. Through the human body circuit, the luminescent lamp will emit red light. - Applicable: line on-off detection, line breakpoint test, Neutral line/Live line detection, DC detection, sensing function. Professional , no obvious heat when working, comfortable to grip. Compact structure, small in size, with pen clip design, easy to carry and use. Self-test function usage: self-test before use, hold the pen tip in one hand, and touch the touch electrode with the other hand. Self-test result: When the light is on, it means that the electric pen is normally fully charged, and if it is not on, it means that the battery needs to be replaced. Through the human body circuit, the luminescent lamp will emit red light. Applicable: line on-off detection, line breakpoint test, Neutral line/Live line detection, DC detection, sensing function.