This loudspeakers have aluminum hirn bodies. They are easy for installation.
Each of them has strong output, low input impedance and high effect, the trsnsmitting range is far.
Suit for paging system, siren&alarm system, traffic&crowd control by police, indoor&outdoor application publicty, vehicle Installation, high noise areas.
When it comes to communication equipment, the robust yellow weatherproof industrial telephone with analog IP65 outdoor waterproofing is considered one...