Morley PL-LIB01Ssecond loop card for PL-1000 V2 fire control panels. Optional loop module PL-LIB01 adds an additional loop to PL-1000 V2 fire control panel, expanding the system up to two loops and supports 159 detectors and 159 input/output modules. (For PL-1000 Version 1 control panels, please inquire)