The perfect sensor collection for your testing and build environment Excellent extension to your ROCK PI 4 GPIO break out kit Completely documented Sample programs for your coding support Native Arduino support Supported by ROCK PI 4 GPIO via librmaa (sample sensor integrated as reference) Download link for sample code and documentation will be sent after the purchase to your provided mail address CONTENT: Joystick - Relay - Microphone - 8 LED PCB - Voltage regulator linear - Flame - Hall TTL - Touch - Temp I2C - Buzzer - Piezo Speaker 16R - RGB-LED - IR-optical detection - Two color LED 5/3mm "RED/GREEN - Gas MQ-2 - Vibration - Reed contact - Heartbeat - Flash LED - Light barrier - Button - Shock - Rotary encoder - 5V Step-engine with driver PCB- Tilt - Photo resistor - Temperature and humidity - Potentiometer / analog hall - 1W LED module WW - Temperature 1Wire - NTC threshold TTL / NTC 10k - IR receiver 38KHz - IR LED - Motion detection PIR Please note! To save shipment cost for you, we repack the sensors kit into a more compact box.