Features:
1. It is very important to adjust the frequency of the machine. Correctly use the potentiometer in the appropriate position to make the relay emit a crisp sound without sinking, and the effect is the best.
2. Put the two electrodes into the water. The two rods are separated by one to five meters (depending on the power of the machine), and continue to press the switch. Then turn off the switch!

Description:
Name: Ultrasonic Inverter 

feature
– Single frequency or mixed frequency can be switched, the power of single frequency is the largest, and the buoyancy of mixed frequency is optimal.
-Large copper battery clips to protect the maximum output of current.
-smart fan for optimal heat dissipation.
Input voltage: DC 12V
Power: 985000W
Size: 18 x 14 x 5cm
Weight: 889g
PLEASE NOTE: You need to use 1.5 mm2 or larger output wires to use. Otherwise it cannot be used, only the sound of the fan can be heard.

Packing list:
1 x Ultrasonic Inverter 
1 x switch

Note:
Different displays may cause the color of the item in the picture a little different from the real thing. 
Manual measuring,please allow 1~3mm error,thank you.