In this article we consider the latest underwater lights from St. Petersburg Dive Electronics. A unique digital control scheme for a microcontroller maintains constant brightness throughout the entire running time. In addition, these underwater lights only on the date of underwater technical lights, which have multi-level indicator of the discharge. Indicator of the three LEDs allows you to monitor battery level. Each LED in the discharge changes color from green to red. Therefore, the diver always know how much more will be enough light.
In addition, LED displays and flashlight modes: Full power – the light is continuously Energy-saving mode – all three LED indicators are flashing at the same time Automatic power-saving mode – two outer LEDs are flashing red, the middle LED is off. Emergency Mode – the average LED flashing red, the others are off. Underwater lights from this manufacturer have a few more features, "smart" control circuit monitors the battery discharge and discharge with a strong flashlight will automatically translate into power saving mode, which will allow the diver to surface using light. . In lamps used a powerful lithium-ion battery with double sealed canisters and electronic protection against short circuits and overdischarge. Lithium-ion batteries Unlike the nickel-cadmium and nickel-metal does not have a memory effect, so they can be recharged at any time, regardless of their degree of discharge. In the lamps used most effective to date LEDs. Optical systems that are installed in conjunction with LEDs provide viewing angle from 4 to 6 degrees, depending on the model lamp. To date, canister lamps can be purchased two models: Alpha-1800 with a luminous flux in 1200Lm and an angle of 6 degrees and Photon-1500 with a luminous flux in 1000Lm and angle 4 deg. All information on this underwater lamps contained in the manufacturer's website