Devices operate from .005 lux. Modular design is straight forwarded and simple - similar to that you can find in a gun industry. Service and part replacement is easy and may be done without any special tool or equipment. Slotted screwdriver is the only tool to make all necessary optical adjustments. Devices are fully made of metal and free of radiation of any kind for this reason.
All devices are waterproof, over-light protected and robust to temperature cycling and vibrations.
Optics protected with inflated soft rubber eye-guards and front lids. Small pin size holes provided within the front lids make the devices usable in a day time. Devices powered by standard commercial style widely available batteries and supplied with a case and detailed OEM English manual.