The Triplett Model ET30 Magnetic Field Detector quickly determines the presence of a magnetic field including AC, DC and Permanent Magnets. It can test solenoid valves in pneumatic/hydraulic control equipment, relays with coils, electrically controlled solenoid valves in vehicles/machinery/oil burners, and audio speaker coils. It features a built-in self test magnet, LED flashlight and a low battery indicator. Includes (2) AAA batteries. ET30 Magnetic Field Ranges(H) 63H, 98H, 401H, 810H Max Current 32mA Magnetic Field Indication Steady blue glow Power (2) AA batteries Dimensions 6.3 x 0.8 x 1” (159 x 21 x 25mm) Weight 1.7oz (48g)
