Cygnus CYG2/85DBPIR Wireless Call Point Fire Alarm operates using a single battery pack and is IP rated, thus suitable for external use. This device has been designed as a standalone alarm unit as well as a radio alarm. Operating with a 85 decibel sounder, these devices are built with a less audible sounder for quieter areas such as operational facilities where a 110 decibel level is inappropriate. The call point is pushed to raise an alarm which will activate alarms around the entire site.