The SR-40 road stud is ideal for countries with low sun exposure due to its high-performance photovoltaic solar module. It has robust construction, making it suitable for harsh conditions and ready for snow plough machines. This road stud has low power RF with 868MHz network communication.
The i-stud evolution technology applied to SR-40 increase the performance of solar power studs with energy storage by battery. The main advantage of i-stud is the use of microcontroller technology inside each stud, which allows several beneficial features and control options even after installation.