AC Electric Voltage Power Detector Sensor Tester Non-Contact Pen Stick 12~1000V Pen Non-Contact Voltage Detector - Also called voltage detection pen. Using the principle of inductive detection, No physical contact is required. Very Safe and convenient. AVD03 Non-contact voltage detector: AVD03 has sensitivity adjustment function, which can adapt to the test needs of different occasions. Auto power off. (AC Voltage range:12V~1000V AC / 50~500Hz) Battery : 2X1.5VAAA Type Operating Temperature: 32 to 122 (-10 to 50). Storage Temperature: -4 to 140 (-20 to 60). Humidity: <85%RH. Dimensions: 14625X22mm. Weight: 26g.