<https://acore.com.tw/product/aver-ptc500s/#product>
<http://schema.org/description>
"30 倍光學變焦\r\n\r\n \t\r\n120° 超廣角鏡頭\r\n\r\n \t\r\n廣域/講台/黑板追蹤模式\r\n\r\n \t\r\nFull HD 1080p60\r\n\r\n \t\r\n多人偵測\r\n\r\n \t\r\nHDMI/3G-SDI/IP 輸出"
<https://acore.com.tw/product/aver-ptc500s/>