InfoComm 2019: Proel Spa Showcases the AE300 Compact, All-in-One Voice Alarm SystemJune 18, 2019 | Home / June 18, 2019 rave-video / InfoComm 2019: Proel Spa Showcases the AE300 Compact, All-in-One Voice Alarm System InfoComm 2019: Proel Spa Showcases the AE300 Compact, All-in-One Voice Alarm System