I have used NRF24L01 with TMRH20 library for a buiding automation proof of concept. Though it works, yet the 2.4GHz frequency has very limited wall penetration, so I am considering SI4432 or NRF905 (both at 433MHz). But it looks like they dont have a mature library on Arduino as compared to NRF24L01.
I am looking for a module with
- Sub-Ghz frequency
- A stable library on Arduino (nano)
- Low sleep/standby current
- Auto acknowledgement feature in hardware
- RSSI measurement.
What are your suggestions?
Thanks in advance.