Specification: Origin: Mainland China Model Number: Sensor Module Starter Kit Voltage: around 5V (depending on the case) Features: Based on the 37-in-1 kit, more practical modules are added to achieve more experimental needs. 45 kinds of sensors included: 1 x Arduino joystick game controller module 1 x Infrared Sensor Receiver Module 1 x Head Sensor Module 1 x Temperature and Humidity Sensor Module 1 x Infrared Emitter Sensor Module 1 x 5V Relay Module 1 x Smart Car Obstacle Avoidance Sensor Infrared Sensor Optical Switch 1 x Heartbeat module for ARDUINO finger detection 1 x Microphone Sensitivity Sensor Module 1 x Metal Touch Sensor Module 1 x Flame Sensor Module 1 x 3-colour LED module 1 x Hunting Sensor Module 1 x Linear Hall Sensor 1 x Rotary Encoder Module 1 x Active Buzzer Module  1 x Magic Cup Module 1 x Small Passive Buzzer Module 1 x Digital Temperature Sensor Module 1 x Photoelectric Breakout Module 1 x Temperature Sensor Module 1 x Bi-Colour LED Common Cathode Module 3MM 1 x Switching Module 1 x Hall Sensor Module 1 x RGB LED Module 1 x Module for Arduino Mini Reed 1 x Tilt Switch Module 1 x Auto Blink LED Module 1 x Key Switch Module 1 x Photoresistor Module 1 x Vibration Switch Module 1 x Crash sensor module for ARDUINO 1 x Temperature Sensor Module 1 x Analogue Hall Sensor 1 x Microphone Sound Sensor Module 1 x Large Reed Module 1 x Bi-Colour LED Module 1 x Breadboard power supply module 1 x Ultrasonic Module 1 x MP1584EN Buck Module 1 x SD Card Reader Module 1 x Gyroscope M Product Size: 250.00x220.00x30.00mm/9.84x8.66x1.18inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Sensor Module Starter Kit(45pcs)