"Demos Endustriyel Sistemler Ltd. Sti"., shortly "Demos" is a well known company especially for its own products related to telecommunication market ( base stations) and electricity products market.Demos is located in Istanbul where is the financial and trade centre of Turkey.Demos mostly supplies test equipments such as site analyzer, emr/emf tester ( electromagnetic radiation tester, spectrum analyzers, network analyzers), professional compass, digital inclinometer, feeder cutter tool ( cable preparation tool), nylon/steel cable ties, copper cable lugs, rf/feeder cables, transmission radio cables, rf connectors, led aircraft warning lights ( aviation obstruction light) / aviation light, pen type fiber optic cable fault locator ( visible laser light source)Wetra is a registered brand name of Demos. Wetra branded product line includes the nylon/steel cable ties, copper cable lugs and led aviation obstruction lights ( led aircraft warning lights)Demos exports Wetra brand led aviation obstruction lights ( aircraft warning lights) to Latin America, Middle East, North Africa, Eastern Europe, Central Europe, Australia.Demos manufactures and supplies the following models of Wetra brand led aviation obstruction lights that comply with ICAO Annex 14 international regulations.LED Single Aviation Obstruction Lights ( Aircraft Warning Lights )LED Dual Aviation Obstruction Lights ( Aircraft Warning Lights )LED Solar Powered Single Obstruction Lights ( Aircraft Warning Lights )LED Solar Powered Dual Obstruction Lights ( Aircraft Warning Lights )LED Marine LanternsAids to Navigation