The RFM42B is a low cost, highly integrated, ISM band (433/868 / 915MHZ) transmitter module that provides adjustable power output in steps of 3dB. RFM42B has a power output of + 1 ~ 20dBm. RFM42B is highly integrated and reduces BOM cost..
characteristic:
Frequency range: 433/868 / 915MHz
Output power range: 1 ~ 20dBm
Low power consumption: 85mA @ + 20dBm (emission)
Data transfer rate: 0.123-256kbps
FSK, GFSK and OOK modulation modes
1.8-3.6 V power supply
Ultra low power shutdown mode
Integrated 32kHz RC or 32kHz XTAL
Timed wakeup function
Automatic frequency control (AFC)
Power-on reset function (POR)
Configurable packet structure
Preamble detection
64 bytes transmit data register (FIFO)
Low power detection
Temperature sensing and 8-bit analog-to-digital converters
Operating temperature range: -40 to + 85 ° C
Integrated regulator
Frequency hopping function
Built-in crystal adjustment function
20-pin QFN package
low cost