อัปโหลดแล้ว 6 ปี ก่อนหน้านี้
Viking Electronics VK-40-IP help you in broadcasting regular voices, as well as different emergency alerts and also background music. These speakers have an excellent amplifier and can connect another amplifier to increase the sound of that speaker. Some of these speakers are one way that you can only listen to these speakers but some of these are two ways so that you can also send your voice to other people. Visit us:http://blog-goheadsets.blogspot.com/2018/06/viking-electronics-vk-40-ip.html
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