Description: No battery needed, very easy to use, with LED LCD and neon lights voltage indicator Support direct detection and induction detection Can detect 12-250V AC and 6-36V DC directly, also can detect zero line, phase line of AC indirectly Specification: Size(L x W): Approx. 13 x 2 cm/5 x 0.8 inch Package Includes: 1 Piece Voltage Detector