DSP9328A IP Waterproof Hands-free Telephone with Loudspeaker and Warning LightJuly 13, 2022view
DSP9327S IP Waterproof Sound Alarm Wall-Mounted Telephone+15W SpeakerNovember 3, 2021DSP9327S IP Waterproof Phone+15W Speaker suitable for use in environments with special requirements such as subways, light rails, highways, ships, mines, power plants, steel companies, etc, which have...view
DSP9328 IP Waterproof Hands-free TelephoneJuly 13, 2022viewwe will contact you within 24 hours.
How to Give Full Play to the Effect of Mic Amplifier So That the Sound Does Not Leave a Trace?March 31, 2021The microphone amplifier is responsible for amplifying the microphone signal and performing some necessary processing, and then turning it into a way of line output and then connecting it to the next ...view
Components of the Conference SystemMay 13, 2022One microphone and two speakers can hold a conference, which has been used for decades. In the process of human communication, the performance of a single voice is far from meeting the requirements of...view
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