Description: This is a very good kits which developed specially for beginners. It is a complete set of most common and useful electronic components. All sensors are carefully selected and tested. Sensors implementation and programming is a key skill for beginners to design their DIY project. To help starters to learn sensor programming, this sensor modules kit has delicately selected sensors to detect temperature, humidity, sound, light, infrared, motion and many other commonly-used properties. Features: 37 sensor modules and 1 listing paper in one plastic box. A complete set of most common and useful electronic components. It is extremely easy for fancier to control and use these modules. The sensors come in a handy protective plastic box. Sensors to detect temperature, humidity, sound, light, infrared, motion and many other commonly-used properties. Specifications: Box Material: PVC Box Size: 27.5 x 17.6cm / 10.82 x 6.93" Module Quantity: 37 Weight: 405g(approx.) Package Includes: 1 x Joystick XY Module 1 x Flame Sensor Module 1 x RGB LED Module 1 x Heartbeat Sensor Module 1 x Light Cup Module 1 x Hall Magnetic Module 1 x Relay 1 x Linear Hall Module 1 x SMD RGB Module 1 x 7-color Flash Module 1 x Tilt Switch Module 1 x TEMP 18820 Module 1 x Big Sound Module 1 x Touch Module 1 x Two-color LED Module 1 x Laser Emit Module 1 x Ball Switch 1 x Analog Temp Module 1 x Small Sound Module 1 x Digital Temp Module 1 x Two-color Module 1 x Button Switch 1 x Photo resistor Module 1 x IR Emission Module 1 x Tracking Module 1 x Buzzer Module 1 x Reed Switch 1 x Shock Switch 1 x Temp and Humidity Module 1 x IR Receiver Module 1 x Avoid Module 1 x Passive Buzzer Module 1 x Mini Reed Module 1 x Rotary Encoder Module 1 x Analog Hall Module 1 x Tap Module 1 x Light Blocking Module Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.