Automatic Sprinkler Heads & Accessories - 8000 Series (Section 8-2 thru 8-3) Testing Equipment - 8068-8099 Series The Nomad / PRV Tester  (Section 8-4) Gauges & Meters  (Section 8-5) Supervisory Equipment - 8150 Series  (Section 8-6) Supervisory Switches Alarm Bells Plug Type Switch Water Flow Detectors