The nRF905 is a radio transceiver IC similar to the well known nRF24L01, but operates at 433MHz instead of 2.4GHz, has a much longer range and a few extra IO pins. However the nRF905 data rate is only 50Kbps compared to nRF24L01’s 2Mbps.

Features:

• The tri-band transceiver, operating frequency of the international ISM band 433/868/915MHz GMSK modulation, anti-interference ability, especially suitable for industrial control applications using the DSS PLL frequency synthesizer technology, and excellent frequency stability and high sensitivity-100dBm low operating voltage (2.7V), small power consumption, standby only 1uA, to meet the requirements of low power devices, the maximum transmit power up to 10dBm with multiple channels (up to 170), in particular, to meet the special needs multi-channel work occasions, the work rate up to 76.8 Kbps
• External components of at least (10), the basic need to debug. Low transmit power and high receive sensitivity of the design, the use of the license required to apply for open use at distances up to 1000 m ** and the specific use of the environment and component parameters.

Specification:

• NRF905 work band: 433/868/915MHz
• Channel number: 170
• Function: transmitter / receiver
• Frequency stabilization method: PLL
• Modulation mode: the FSK / GMSK
• Maximum output power: 10dBm
• Sensitivity: -100dBm
• Maximum operating rate: 76.8Kbit / s
• Working voltage: 1.9 - 3 .6 V