Pk5500eng manual. DSC Keypads for Power Series Security Systems. LCD Keypad, Full Message, 64- Zone, Surface/ Wall Mount, English Function Key, 12 VDC, 125 Milliampere, 6- 1/ 16 Width x 13/ 16 Depth x 4- 7/ 16 Height. NOTE: These instructions shall be used in conjunction with the system Installation Manual of the Control Panel with which this equipment is intended to be used. 1 Installation Instructions* 0 # R001.