For Tesla Coil Small Black Box Multi-function Electromagnetic Pulse Generator C HIGH FREQUENCY: Fingerprint lock tester generates a high frequency electromagnetic wave field. Energy saving lamps induce electromagnetic waves to generate current. PRE USE TEST: No electricity is required to light the high efficiency bulb. When the instrument is close to the light emitting tube part of the lamp, the lamp will light up. APPLICABLE: Used in laboratories, electronics research and development and other factories to test electronic motherboards for anti interference testing experiments. EASY TO USE: Coil EMP electromagnetic pulse tester built in reinforced antenna and external high frequency antenna. Charging time is only 1.5 hours, very easy to use. WARM TIPS: Do not touch the transmitting power coil of the instrument, as this will reduce the power and affect the use of the instrument. Specifications: Item Type: Coil Tester Material: ABS Typical Application: Fingerprint Lock Working Voltage: DC 36V Antenna Mode: Built In Reinforced Antenna, External High Frequency Antenna Power Supply Voltage: DC 36V 200mA Charging Time: 1.5 Hours Plug Specification: US Plug Package Includes: 1 x Coil Tester 1 x Power Adapter 1 x Triode 2 x Coil 1 x Metal Pin