Feature:  On the basic of 37 in 1 kit, adds more practical modules to achieve more experimental requirements.  Voltage: About 5V (According to the specific circumstances)  Document Download: Can reference the 37 in 1 kit : Click to open.    Package included:  1 x PS2 Joystick game controller module;  1 x Infrared sensor receiver module;  1 x Laser head sensor module;  1 x Temperature and humidity sensor module;  1 x Infrared emission sensor module;  1 x 5V relay module;  1 x Smart car avoid obstacle sensor infrared sensor photoelectric switch;  1 x finger detect heartbeat module;  1 x Microphone sensitivity sensor module;  1 x touch sensor module of Metal;  1 x Flame sensor module;  1 x 3-color LED module;  1 x Hunt sensor module;  1 x Linear magnetic Hall sensors;  1 x Rotary encoder modules;  1 x Active buzzer module;  1 x Magic Light Cup modules;  1 x Small passive buzzer module;  1 x Digital temperature sensor module;  1 x Optical breaking module;  1 x Temperature sensor module;  1 x Bicolor LED common cathode module 3MM;  1 x Mercury opening module;  1 x Hall magnetic sensor module;  1 x RGB LED SMD module;  1 x Mini Reed module;  1 x Tilt switch module;  1 x Automatically flashing LED module;  1 x Key switch module;  1 x Photoresistor module;  1 x Vibration switch module;  1 x hit sensor module;  1 x Temperature sensor module;  1 x Analogy Holzer magnetic sensor;  1 x Microphone sound sensor module;  1 x Large reed module;  1 x Two-color LED module;  1 x Breadboard power module;  1 x Ultrasonic module;  1 x MP1584EN buck module;  1 x SD card reader module;  1 x Gyro Module;  1 x Soil module;  1 x DS1302 clock module;  1 x Water level module