Audible or visual signals used to warn of unacceptable conditions at monitored sites. They may be buzzers, horns, speakers, bells, or warning lights. They can be Advisory, Alert, or Action alarms. The first two are for operation and maintenance information, to alert of abnormal situations that do not compromise product SISPQ. The Action alarm is for GMP records, indicating that product SISPQ may have been compromised, but Alert alarms are also usually recorded.