Quantity   Component name
1 × attiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × 433Mhz tx module
1 × 433Mhz Rx module
1 × Small end switch
1 × Cr2032 Batteries and Battery Accessories / Batteries
1 × Arduino Nano
1 × Lcd 2*16
1 × 1 piezo speaker