Quantity   Component name
1 × Arduino Mini Pro
1 × Arduino Nano
1 × Switch Development Kits, Boards and Systems / Development Kits and Boards
1 × RF 433MHz emitter
1 × RF 433MHz receiver
1 × DC-DC converter
2 × Resistor 1K
2 × Resistor 100K
1 × Relay module
1 × Buzzer
1 × 2 x AAA battery holder