Anatec ALF 500 Mode D'emploi page 8

Specification and features
Display size: 4.3"
Display resolution: 480 x272 Pixels.
Depth capability: 30 m
Wireless operating range: 300 m
Sonar frequency: 115 KHZ
Sonar beam angle: 60°
Sonar alarms: fish / shallow / low battery
Sonar unit size: 153 X 110 X 44 mm
Portable case size: 262 X 150 X 98 mm
Operational temperature: -10°C to 50°C
Control box power supply: 8 X AA Alkaline batteries
Sonar unit power supply: 8 X AA Alkaline batteries
Understanding the screen