This is NEW Unused Old Stock DSC RK5501 PowerSeries 64-Zone LCD Picture Icon Keypad Compatible with the DSC Power Series Panels (432, 632, 832 864 Series) The Compatible Alarm Panels are: PC580, PC585, PC1555, PC1555MX, PC1565, PC1575, PC1616, PC1832, PC1864, PC5010, PC5015 PC5020 Alarm Panels Modern, slim-line landscape keypad Enlarged keypad buttons 5 programmable function keys Input/Output terminal can be programmed to operate as a zone input, programmable output or as a low temperature sensor 3 one-touch emergency keys Multiple door chime per zone Adjustable backlight and keypad buzzer Wire channel Dual wall-mount and front cover tamper Easy-to-install mounting hinge Surface or single-gang box mount AC status ICON Available with English function keys The older DSC systems are very unique and this keypad will not work with the DSC PC Classic including: PC550, PC560, PC1000, PC1150, PC1500, PC1550, PC2000, PC2525, PC2500, PC2550, PC3000, PC4000 PC4010 Alarm Panels. 20% RESTOCKING FEES AND SHIPPING WILL BE CHARGED. IF ITEM IS FUNTIONAL OR INCOMPLETE. Your feedback is extremely important to us! If you are satisfied with our service please take the time to give us positive feedback. We tremendously appreciate it! We strive for your complete satisfaction. Likewise, if you have any issues, please contact us first, and we promise we will do our best to satisfy your needs and solve the problem. If we resolve your problem, we kindly ask you to still leave us positive feedback. Your kindness will be extremely appreciated!