Features: Compact structure and light weight, portable and handheld to use and carry. Made of selected ABS material, comfortable grip & wear resistance & long service life. Fine workmanship ensures stable performance and high accuracy. Retractable antenna, which can be extended to 15cm, convenient for testing. Press and hold the POWER button, then the LED indicator will light up at one-touch, and the tested neon tube will flash if it can be used normally, easy to use. Powered by 4 * AA battery ( NOT included), low power consumption & easy replacement. Suitable for the detection of various neon tubes for electrician, lighting store, hardware store, production line, delivery inspection, family inspection, etc. Specifications: Material: ABS Power Supply: 4 * AA battery (NOT included) Item Size: Approx. 19.5*4.1*2cm / 7.68*1.61*0.79in Package Size: Approx. 21*5.2*2.3cm / 8.27*2.05*0.91in Package Weight: Approx. 97g / 3.42oz Notes: 1. DO NOT press POWER button to avoid electric shock and danger when touching the antenna. 2. DO NOT use the product with wet hands or in a damp environment. 3. Make sure the battery polarity is correct before closing the back cover. Package List: 1* Neon Tester