HM-T
2.5V to 5V, 433 / 868 / 915MHz, FSK modulation, +6dBm Output Power, 0.6kb/s to 9.6kb/s RF Transmitter Module

RFM02
2.2V to 5.4V, Low power, Standby <0.3uA, Tuning free, FSK/ASK modulation, Fast PLL lock with 2.5KHz step, 115.2Kb/s (FSK) and 256Kb/s (ASK), Programmable freq deviation, Differential antenna I/P, Automatic antenna tuning, Programmable O/P power, SPI I/F RF Transmitter Module

RFM42
1.8V to 3.6V, 240-960MHz, FSK / GFSK / OOK modulation, +1dBm to +20dBm Configurable Ouput Power, Low power consumption, 1kb/s to 128kb/s, Ultra low power shutdown mode, Integrated 32KHz RC or XTAL RF Transmitter Module

RFM42B
1.8V to 3.6V, 240-960MHz, FSK / GFSK / OOK modulation, +1dBm to +20dBm Configurable Ouput Power, Low power consumption, 0.123kb/s to 256kb/s, Ultra low power shutdown mode, Integrated 32KHz RC or XTAL RF Transmitter Module

RFM43
1.8V to 3.6V, 240-960MHz, FSK / GFSK / OOK modulation, -8dBm to +17dBm Configurable Ouput Power, Low power consumption, 1kb/s to 128kb/s, Ultra low power shutdown mode, Integrated 32KHz RC or XTAL RF Transmitter Module

RFM43B
1.8V to 3.6V, 240-960MHz, FSK / GFSK / OOK modulation, -8dBm to +17dBm Configurable Ouput Power, Low power consumption, 0.123kb/s to 256kb/s, Ultra low power shutdown mode, Integrated 32KHz RC or XTAL RF Transmitter Module

RFM60
1.8V to 3.6V, 27-960MHz, FSK / OOK modulation, +13dBm Configurable Ouput Power, Low power consumption, 100kb/s, Ultra low power shutdown mode RF Transmitter Module