4GB RAM 1.5Ghz ARM Cortex-A72 BCM2711 + WiFi + Bluetooth + POE
*Accommodates four Lithium-ion battery
MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135
Arduino Uno based on ATmega328 China
ESP-12F N ESP8266 module ModeMcu development board