ESP32-WROOM-32E WiFi + BT + BLE Module Electronics • Dev board
Operating voltage/Power supply: 3.0 ~ 3.6 V
Operating ambient temperature: 85 °C version: –40 ~ 85 °C
40 MHz Internal crystal oscillator
Bluetooth V4.2 BR/EDR and Bluetooth LE specification
WiFi 802.11b/g/n
https://www.ktron.in/product/esp32-wroom-32e/
MAX485ESA Transceiver Interface IC Electronics • Integrated circuit
The MAX485 are low-power transceivers for RS-485 and RS422 communication. Each part contains one driver and one receiver. The driver slew rates of the MAX481, MAX485, MAX490, MAX491, and MAX1487 are not limited, allowing them to transmit up to 2.5Mbps.