audible fire alarm battery operated?

[penguiness]

Where can i buy a very loud audible battery operated fire alarm for a joinery environment

[Hymie]

Assuming standard smoke detectors suffer nuisance alarms due to the wood dust, I would recommend the use of a heat alarm. Most are mains powered, but a few are available as battery powered only � see here for an example:-
http://personal-protective-safety-equipment.co .uk/Alarms-Carbon-Monoxide-CO-Heat/9v-Intercon nectable-Heat-Alarm.asp

The down side is that they are not as sensitive in detecting fire as a smoke alarm and need to reach over 50�C as a result of heat from the fire before they will alarm.

They are typically recommended for use in kitchens, where normal smoke alarms would suffer false alarms.