For 1 km range I would go for the RC2500HP (If you need to do 2.4 GHz, 868 is an alternative for EU)
Last Update: November 8, 2017
November 8, 2017 1474 RC232 Q&A
For 1 km range I would go for the RC2500HP (If you need to do 2.4 GHz, 868 is an alternative for EU)
Last Update: November 8, 2017