โ†‘LoRa ๋ฌด์„  ๋ฆด๋ ˆ์ด ์Šค์œ„์น˜ 1/2/4/8 ์›จ์ด DI+DO IO ๋ชจ๋Ž€ 868/915MHZ CDSENET E860-DTU RS485 ์›๊ฒฉ ์ „์†ก ์žฅ๊ฑฐ๋ฆฌ 5/10km - TopDealBox