1. power: 2W 2. Rich interface: standard RS-232, TTL, and RS-485 3.Carrier frequency: ... 868, and 915MHz or ISMProvide rich interface: standard RS-232, TTL, and RS-4858CH, expandable for 16/32 ... channels according to requirements of customersBaud rate: 1,200, 2,400, 4,800, 9,600, 19,200bpsInterface format ... network and data collection system YS-C30M 2-3km range data transceiver ,rf module ,high speed ...