AC high voltage sound and light electroscope, combines the advantages of a variety of traditional electroscope. Its lines and advanced features and practical. Field operations with sound and light warning, safe and reliable. 1.5-volt power supply with four button-type alkaline batteries, long life. Telescopic rod insulators easy to use. The AC high voltage sound and light electroscope based on "Ministry of electrical safety equipment for Quality Supervision and Testing Center" standard.