Quantity   Component name
1 × Amcrest ATR-22 UHF Portable Radio Programmable 2-way radio with 2-pin "Kenwood" headset port
2 × Male to Male 3.5mm to 2.5mm TRS Audio Cable Audio jumper cable
1 × Arduino Nano (clone) ATmega328P development board
1 × LC Technology MT8870 DTMF Decoder Module DTMF decoder IC with 3.5mm jack
1 × SainSmart 4-Channel 5V Relay Module Opto-isolated relay bank that uses inverted logic