โ†‘๋ฉ”์‰ฌํƒ€์Šคํ‹ฑ 868MHz LoRa ์•ˆํ…Œ๋‚˜ 915MHz (LoRaWAN์šฉ) 4dBi ์ž๊ธฐ ๋ถ€์ฐฉํ˜• SMA ์ˆ˜์ปท ์ผ€์ด๋ธ” ํฌํ•จ ๋ฌด์„  ๋ชจ๋“ˆ์šฉ ์•ˆํ…Œ๋‚˜ - TopDealBox