Features
Detect and display grass, short &tall weeds, sand, and rocks on seabed
Measure water depth and identify structure where fish lurk
Depth range readout up to 100m(328.08ft)
Get the approimate location of school of fish or solitary fish
4.6cm or 46mm diameter Round transducer sensor with 7.5m cable, 45-degree beam angle
Powered by 4 AAA batteries
With battery safe mode to save battery life and low battery indicator
Big and clear LCD display with Green LED backlight
Screen display contains super clear reading results
5 different selectable sensitivity settings to suit different situation
With fish depth scale and audible fish alarm
Removable transducer float
Water-resistant design
Anti-UV LCD
Durable and accurate

Material: ABS
Color: Yellow + Black
Host Size: 118 * 67 * 30mm
Buoy Size: 80 * 80 * 24mm
Sensor Size: 47 * 47 * 37mm
Probe line length: 10 m
button:
POWER power button, the screen refresh
SETUP function selection
ENTER function setting button

Display: LCD display
Backlight mode: yellow-green LED
Power requirements: 4 AAA batteries (not included)
Units of measurement: feet / m
Sensor radiation angle: 45 degrees
Measuring maimum: 100 m / 328 ft
Measurement Minimum: 0.6 m /2.0 ft (Recommendation 1 m)
Working temperature: -20 ~ 70 (-4 ~ 158 )

How it works: the use of ultrasonic transducers transmit signals propagate through air or water, contact with objects using ultrasonic signal fed back in the water, and then by the internal processor, and finally displayed on the screen.

Product Features:
· Simulation demo mode, user learn how to use
· LCD display
· Depth detection range of 100 meters, 10 cm accuracy
· Users can customize the unit of measure: meters or feet
· Light green screen backlight
Battery saving mode
High / Low sensitivity setting
· Fish position depth ruler
· Probe: can float on water or installed in the ship"s side
· 200KHz sonar frequency
· 45-degree angle of the probe detection
Section 47 battery-powered, but not included in the article
· IP4 waterproof design