Annual Wet sprinkler service for buildings A,B,C and the anti-freeze loop test. Tech found: Bldg A - No evidence of FDC repairs of deficiency found during last 5 year inspection which was performed 3-19-2020. Bldg B - The Tamper switch on the backflow inside building b is reporting to the alarm panel as a Non Audible fire alarm instead of a supervisory. You may want to consult with your alarm install company to find out if this is the only way they could set up the switches. In this setup it could roll fire trucks just for a valve being closed.