Wireless fish finders

 

— this term can mean different types of construction: in some echo sounders we are talking about the wireless connection of the sensor to the main unit of the device, in others the entire device is an external sensor, and the role of the control unit is played by a smartphone or tablet, to which the echo sounder is connected via Bluetooth. Anyway, a wireless connection is more convenient than a wired one, but it is more expensive and requires autonomous power (for example, from batteries).