... MHz, 868MHz, 915MHz or ISM othersHigh speed ,easy to use 500mW output, 433915MHz RF output: 500mW 1.Products ... Provide rich interface: standard:RS-232/ TTL/ RS-485;* 8 channels, expandable for 16/32 channels according to requirements of customers;* Baud rate ... terminal;* Electronic bus station and intelligent traffic;* Point to multi-point wireless network,data collection system. 3.Specifications ...