Specifications:Color:YellowDrive: Intelligent drive computer boardSecurity protection: 12 intelligent security protectionsInput voltage: 12VConfiguration: single transformer 6 tubeGear: Mixing / FrequencyEffective range: 1-2 metersSize: 180 * 120 * 45mmPulse Width:1%-12% adjustableOutput Frequency:20-120HZ adjustableOutput Waveform: sine waveBattery:12 V DC (any model)  (not included)Overload Protection:Yes (120A)Low Voltage Protection:Yes (Less than 9V/DC protection )High Voltage Protection:Yes (Exceed 15V/DC protection )Over-temperature Protection: 85°C Features:- Short-circuit Protection&Reverse Polarity Protection&Waterproof Protection.- High power& Low energy consumption& Excellent results, the use of frequency conversation electronic technology.- Full current limiting protection, intelligent pulse, high frequency/low frequency regulation, can be adjusted according to the need to adjust the frequency of electric field size.- Use advanced numerical control technology and exclusive designed computer program .The unique binary output structure.The duty cycle and frequency are adjustable,so they do not affect each other. Packaged included:1x Ultrasonic Inverter How to use it:- When you use the electrofisher may do not know how to install and use it, here we give the installation method of the electric fishing machine which work on boat, it will help with the beginner to know how to use electrofisher.- The output of electrofisher anode connected with net and cathode connected with wire which put in water;                                                            - Connect the electrofisher to batter, anode to anode and cathode to cathode;- Pressing electro fisher switch and than it can work(you can adjust the output power by the digital indicators on the electrofisher);- That is all the simple process for how to use electrofisher.