Frequency flashing photo automatic machine ???-2D

The photoautomatic unit is designed for automatic switching on (in the dark time of day) and automatic switching off (in the light time of day) of lamps of navigation lanterns of inland waterways. Photoautomatic units are replaceable and spare parts of navigation lights, which are intended for marking inland waterways - marking the axis and edges of the ship's course, dangerous places at the edges of the ship's course, as well as other warnings in the dark time of the day in accordance with GOST 26600-98 "Navigation signs of inland waterways". The photo-automatic unit ???-2D provides frequent flashing character of fire with supply voltage 2,6V.
Design of the photoautomatic unit: cylindrical body with a photocell, holes for fixing to the body of the navigation lamp and outputs for connection of LED and electric power supply.
Overall height of the photo automatic unit, H= 50 mm
Overall diameter of the photo automatic unit, D= 95 mm
Sensitivity of the light sensor of the photocell at which switching on/off takes place...