Main Features:

- Distinct display screen, you can get all the data you need, containing the depth of the sea, the situation of fish and so on

- Constructed with backlight design for clear display at night

- Equipped with string for convenient using

- Apply to lake, river, sea and other fishing environment

- The host is powered by 4 x AAA batteries ( the battery is not included )

- The sensor can be charged by charging cable

How Sonar Works
Sonar technology is based on sound waves. It uses sonar to locate and define structure, bottom contour and composition, and depth directly below the transducer. The transducer sends a sound wave signal and determine distance by measuring the time between the transmission of the sound wave. When the sound wave is reflected off an object, it then uses the reflected signal to interpret location, size and composition of an object.

How to use Wireless Sonar Sensor
Just simply attach the transducer to the end of your fishing line and case it into the water as you would normally float or lure.
Depth Range: 1-80m
10-level Sensitivity (high detection accuracy)
Wireless Operating Range: Max. 80m
Sonar Frequency: 125KHz
Sonar Beam Angle: 90 degrees
Radio Frequency: 2.4GHz
Operational Temperature: -20-80'C