Uninterruptible supply over 30 years!TEST AS, formerly known as TUMEL ELEKTRONIK located in Izmir-Turkey is an independently owned company, offering a wide range of power protection products and services to a wide spectrum of industries and sectors.During the establishment years the company manufactured electronic control devices and inverters, then in 1986 when the IT sector started developing rapidly, Test AS sensed the great need for clean, uninterruptible power and started designing and manufacturing Uninterruptible Power Supplies. As well as an extensive standard UPS range Test AS also offers a variety of other products such as Static Transfer Switch (STS), frequency and voltage converters, inverters and rectifiers under it’s registered trademark “Tescom”. Today all Tescom branded power protection products are manufactured by a group of almost 20 greatly experienced engineers and a staff of over 200 people