Model 9938-2LH Beacon/Horn 
(Wall-mount enclosure with strobe beacon and 98 dB horn for indoor or outdoor applications) 

Model 9929-LH Rack-Mount Alarm System 
(Standard EIA 5-1/4" x 19"; has capabilities and options of Model 9928, plus three DPDT relays) 

Model 9933-3L Alarm System 
(Three visible alarm beacons in blue, yellow and red, mounted on top of IST Model MP202 or 
MP204 controller)