Modifications made by Licensee (see section 3.4.b in )

Rev 1
Prototype version, not published

Rev 2
Board Arduino PRO Mini with NRF24L01 and RFM69 antenna, TP4056 LiOn charger circuit, MCP1700 Voltage regulator, many pin to connect sensors.

Rev 2.1
Added ATSHA204A chip for signing, added EEPROM chip AT25D512, added UF.L antenna socket