January 9, 2018The RH-AUDIO Full-weather IP Speaker Column Series which produce good clear sound and acoustical clarity for background music and paging,are suitable for indoor and outdoor applicationsview
January 9, 2018The Alarm Interface RH2815E is used in a public address system to produce an alarm sound either by a short-circuit signal to trigger auto-alarm or by a manual pushbutton,it can output a built-in siren...view
September 11, 2018Descriptions of UHF 2-Channel Wireless Microphone RH330U Using UHF640-840MHz band to avert interferencing frequency. All using quartz crystal oscillating circuits so the frequency is very steady. Spec...view