The TDA5150 is a low cost, multi-channel ASK/FSK/GFSK RF transmitter for the 315/434/868MHz ISM frequency bands, RF Frequency Ranges: 300 to 320MHz, 433 to 435MHz, 869 to 928MHz, ISM bands. RF Output Power: up to +10dBm. Modulation: FSK(CPFSK), GFSK or AS