1. General Introduction

RFM300LR module series’ design is based on the high performance CMOSTEK NextGenRFTM CMT2300 chip, It operate at 433/868MHz ISM band , The low receive sensitivity(–123dBm) coupled with +20dBm output power ensures extended range and improved link performance, High Adjacent Channel Rejection Ratio is -55dbc;High Blocking Rejection Ratio is -75dBc( @Frequency868.5MHz,DR = 3 kbps, FDEV = 10 kHz; BW=100kHz, 200kHzChannel spacing, interference with the same modulation,Blocking Rejection@+-1MHz)

2. Features

• 143 dB maximum link budget.

• Low RX current of 11mA.

• +20 dBm output power

• High Adjacent Channel Rejection Ratio is -55dbc @Frequency868.5MHz,DR = 3 kbps, FDEV = 10 kHz; BW=100kHz, 200kHz Channel spacing

• High Blocking Ratio Rejectionis -75dBc@868.5MHz +-1MHz

• Programmable bit rate up to 300 kbps@FSK/40 kbps@OOK

• High sensitivity: down to -123dBm.

• FSK, GFSK, and OOK modulation.

• SMD Package (32x14.5X1mm)

3. Application

• Meter Reading

• Wireless data collection

• Automobile security system 

• Home automation and security system