This EL hinge offers several advantages to the installer/customer. Two of the wires are heavy 20 gauge, silver coated, high conductivity Teflon jacketed conductors and four of the wires are 30 gauge, silver coated high conductivity conductors. The two 20 awg wires can be used with electric latch retraction devices, such as the Von Duprin EL 33 and 99 series panic devices. In fact, this EL hinge was engineered for just such uses. The smaller 30 awg wires can be used for controls and switches.
This PTH (Power Transfer Hinge) is independently tested to over 800,000 cycles on average before a wire breaks or goes to ground. That is 8 times the UL requirement of 100,000 cycles typical for most products on the market. This hinge is also burn tested and UL10C listed for use on fire rated doors and frames. Marray was the first with such a listing.