What Are Thermoplastic LED Exit SignsThermoplastic Exit Signs are the most affordable and economical thermoplastic LED exit signs on the market today. ESW's exit signs are UL listed. The UL mark on our exit sign means that UL has tested and evaluated representative samples of our product and determined that they meet the highest level of UL requirements. They come standard with the ability to operate with 120 or 277 voltages and with a battery backup feature they will illuminate the sign for a minimum of 90 minutes. To accommodate virtually any decor the user can select white or black housing with a green or red high output led lamp. Exit Sign Warehouse's thermoplastic exit signs are supplied with an additional face plate. The extra face plate allows the viewer to see the wording EXIT from two directions. Our LED exit signs come standard with a five Year warranty with a prorated battery warranty. The energy efficient LED lamp uses less then five Watts of power making it a no brainer to switch over from incandescent or fluorescent exit lights. The electrical operating cost is only $3-$5 per year.