RFM70 2.4G RF transceiver wireless modules
RFM70 is a low-power, high-speed FSK/GFSK transceiver module specifically operating in the world wide ISM frequency band at 2400 - 2483.5 MHz
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Features:
4-pin SPI interface with maximum 8 MHz clock rate
Support 1 and 2 Mbps air data rate
FSK/GFSK modulation
Programmable output power: -35 ~ +5 dBm
Rx sensitivity -88dBm at the 1M data rate
Programmable frequency range 2400-2483.5MHz, 83 channels selectable
Ultra low power consumption
Data buffering, burst data transmission, auto re-transmission and auto acknowledge
6 data pipes for 1:6 star networks
Low-price MCU enables high-performance RF system
Open area distance: 70-80m

Specifications:
Working frequency: 2400MHz-2483.5MHz
Modulation: FSK/GFSK
Tx Output Power: 5dBm(1mW)
Rx sensitivity: -88dBm
Data rate: 1M／2Mbps　
Tx current: ＜30mA　
Rx current: ＜23mA　
Standby current: ＜3uA　
Channel selection: 83 channels
Data interface: SPI
Operating temperature: -40-85°C
Power supply: DC 1.9V～3.6V
Size: 16.8x12.8mm(PCB antenna included)

Applications:
Wireless mouse, keyboard and gamepad
Wireless audio and headsets
Children finder and tracker
Medical equipment and remote control
Logistics tracker, warehouse inspector, E-label, etc.
Wireless applications of consumer electronics
Low consumption telemeter
Wireless sensor network(WSN)