The Philips T5 LEDtube HF High Efficiency is the perfect replacement for your standard 28W TL-5 tubes in a high-frequency luminaire with electronic ballast (eVSA). Replacing your standard TL-5 tubes by T5 HF LED tubes will instantly save you 47% savings on your energy costs with guaranteed higher light output. The Philips LEDtube T5 HF High Efficiency is suitable for use in warehouses, offices, industrial environments and other business areas. The light of a LED TL does not flash and always switches on immediately (without startup time). The life of a Philips LED TL tube is almost 2 times longer than a standard TL-5 tube (50,000 hours compared to 30,000 hours at a normal TL-5). In a practical situation, this means a life span of 20 years. On this product you have a 5 year Any-Lamp All-In Warranty, ensuring you a working product so you are able to return your investment to carefree. The Philips LEDtube T5 replaces 28W comes with color code 840 - also known as 4000K - cool white which makes this tube suitable to lighten offices and  industrial environments. Please note: this LED tube does not work with a high voltage (220-240 V) but with 90-130V Installation of a Philips LED TL5 Turn off the power Turn the old TL out of the fixture Turn the LED Tl5 into the fixture You turn on the power and save directly 47% on your energy costs