Model: HSF-7 TYPE (HIGH VOLTAGE, AC ONLY), Overall Length (mm): 260, Weight (g): 150, Operating Temperature Range (deg C): -10 - +50, Structure: Waterproof structure (since the inside is vulnerable to water, water is kept out), Leak Current: Dielectric strength:/less than 100mA , Battery Life: 6 Hours continuous running state , Batteries: R03 1.5 V BATTERIES (L) x 2 PIECES (AAA), Opreration Display: Light emitting / possible confirmation in a brightness of 8000Lx Pronunciation / more than 50 dB 1 m away , Working Voltage Range (V): AC80?7000 50/60Hz combined use, Insulation Resistance: DETECTION AND SEIZURE/ MORE THAN 100 Mohm 

Hasegawa HSF-7 High and Low Voltage Detector;

AC 80V〜7000V (50Hz/60Hz)

Audio-signaling and light emitting

R03(1.5V) x 2 pcs