用于隧道管道嘅無線視頻發射器和接收器 wireless-video-transmitter-and-receiver-for-Tunnel-Pipeline-robot-camera wireless-video-transmitter-and-receiver-for-Tunnel-Pipeline-four-camera-front-rear-view 你好!, 我需要部可以傳輸嘅設備 4 攝像頭視頻信號和數據信號,用于控制機械人超過2公里,進行地對地通信.