The ATC-REGU Board features a Step-Down Voltage Regulator LM2576 that enables voltage to change from 7-23V AC (or 9-32V DC) to 5V, 4V, 3.3V, 2.7V or 1.8V.

M66 Quad Band GSM/GPRS Breakout Board with Built-in Antenna, Bluetooth, Open CPU function.

Wireless module low-power 1.8 ~ 3.6V power supply

Embedded Serial to Ethernet Converter

Quectel M95 Breakout Board (M95-TE-A)

WiFi Serial Transceiver Module ESP8266

RFID Card Reader/Detector Module Kit 13.56Mhz

1000 Meters 433 MHz RF Transceiver Module

ADJ Voltage and 3.3V Fixed

NEO-6M GPS module

2.4 GHz wireless data transmission

USB to UART