Here's a short test of the 1003 with the bank drive-thru vacuum motor hooked up to the blower relief valve. I was going to do a three minute test. One minute fire, one minute alert and one minute attack but some of the neighbors were home so I didn't push my luck. I just randomly chose between the test, attack and fire button on the AF timer. There's one weird deal where the solenoids start activating with the chopper running down. I don't know what the deal with that was. It's a lot louder than I thought it would be with the vacuum blower hooked up. I put some foam in the horn to dampen it but it fell out right away. (less info)