Other than normal annual maintenance and monthly testing, what more can you do? These things happen, just the same as any other appliance or equipment failure.
umm....preventative maintenance maybe?....do you wait until the appliance breaks down before u check fluids etc. It's a 2 minute job to CRC the siren and give it a spin around....
Hahaha sure. We'll get a crane out every week so we can CRC the thing.
Send the bill to region "As per Siren Policy" or just get the 5 out of 20 to head up