LTP Series Cord and Plug 12VDC Electronic LED Power Supplies feature LED indicator for ‘power on’, 100% fully load tested, and 5 year warranty. Each LTP Electronic Power Supply incorporates short circuit, over-voltage and over-temperature protection. LTH Series Hardwire 12VDC Electronic LED Power Supplies feature Universal A/C input, LED indicator for 'power on', 100% fully load tested, and 4 year warranty.