DSC LCD-500 Digital LCD Keypad. Guaranteed not to be Dead on Arrival. RARE & HARD TO FIND.. And yes REALLY NEW & UNUSED! This is the slim line version of the LCD600. ONLY For the DSC Classic Series Panels: PC550, PC560, PC1000, PC1500, PC1550. PC2500, PC2525, PC2530, PC2550 & PC3000. Classic Series Alarm Control Panels can use the TOP OF THE LINE Alpha LCD500 Keypad / Programmer. Please ask if you have questions about compatibility concerns with other DSC vintage security equipment. I’m glad to give you some viable options to try help keep your system up and running. DSC LCD-500 SECURITY STATION. Step by Step Instructions. Compatible with DSC Classic Series Control Panels. This is New old stock that has been sitting on the shelves for several years. These have not been manufactured for quite some time. Your satisfaction is guaranteed. If we made a mistake, then the S&H is on us. Please request an invoice before paying if combining with items from our other listings.