| 1. | HP (Hewlett-Packard) Smoke Alarm HP81531A User Guide User s Guide HP 81531A Sensor Module SERIAL NUMBERS This manual applies to all instruments TAfft HEWLETT WIKM PACKARD HP Part No 81531 90011 Printed in Germany Second Edition E0796 Control Serial Number Edition 2 applies directly to all instruments Edition 1 1st May 1990 81531 90011 E0590 1st September 1990 81531 90011 E0990 Edition 2 1st September 1991 81531 90011 E0991 1st September 1992 81531 90011 E0992 1st December 1994 81531 |
 |
||||||||||||