Package included: 1 x Digital Test Pen Specifications: Frequency Range: 50 to 500 Hz Test Voltage Range: 90-1000V AC Powered By: 2 x AAA Batteries (Not included) Item size: about 152*23*15mm Color: yellow, blue,red Features: Detection of AC and DC voltage, and sub-mode LCD display shows the maximum value for the reference. Check the wires with a variety of home appliances through the circuit, to distinguish zero-phase line to find breakpoint. Can also detect the battery's power situation. Checks indirectly on the zero line AC, phase line and breakpoint detection. Test uncharged conductors. Made of premium material, it is strong and durable. Pen-sized, handy tester for quick and easy to test AC/DC voltage. Soft handle for comfortable and easy grips. Notes: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.