Voice Announcer ceiling speaker 6w,Power-on automatic voice loop playback, with 4m memory, single loop playback, or single play once, ceiling ins···

Ceiling mounted infrared human body induction voice prompt horn,Infrared human body induction is a kind of technology that induces human body activity informati···

human body induction voice Wall-mounted  prompter 6WInfrared human body induction is a kind of technology that induces human body activity information by u···

Voice Announcer wall-mounted speaker 6WPower-on automatic voice loop playback, with 4m memory, single loop playback, or single play once, ceiling···

infrared motion sensor scream speaker 20WInfrared human body induction is a kind of technology that induces human body activity information by using infrared&nb···

Voice Announcer Wall-mounted speaker 20wPower-on automatic voice loop playback, with 4m memory, single loop playback, or single play once, ceilin···