Keypad 4x4 Matrix Module Plastic Keys - Arduino trs plug The Temperature Sensor Waterproof DS18B20

The Temperature Sensor Waterproof DS18B20 kit is a temperature sensor with 1-wire designed for temperature logging

Great for making wireless networks that can go further than 2

Operating frequency: 40KHz

Great for amplifying audio

3V logic levels

Keypad 4x4 Matrix Module Plastic Keys - Arduino trs plug The Temperature Sensor Waterproof DS18B20A membrane keypad is a great place to begin any Arduino project that requires the inclusion of buttons, whether for menu selections, robot control, or passwords. Keyboards are perfect for many DIY electronics projects because they are relatively inexpensive, durable, and even waterproof. Process of work It is composed of a thin, flexible material with six layers, each of which serves a specific purpose. Fixing each layer to make this keypad work, and