# BOM

*What do you need:*

- Wemos LOLIN32 (ESP32 board with USB converter and battery charger)
- RFM95 (LoRa radio module)
- I2C OLED display
- 2 buttons and switch
- SMA pcb edge connector + 868 MHz antenna 
- Few resistors and capacitors
- Li-Pol battery (300 mAh)
