Arduino Compatible Mega
ESP32 Development Board
NodeMCU Wi-Fi Development Board
GSM PCB Trace Antenna
915MHz Spring Antenna
1Uf (105k/400v) Polyester Capacitor
Resistor 1/4W
Electret Condenser Microphone
Dot Board 100mm x 240mm
LS1240 Ringer Module Mini
ETA8120S2G Voltage Regulator
ETA8113S2G Voltage Regulator