_x000D_ 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. _x000D_ _x000D_ Features: _x000D_ 37 sensor modules and 1 listing paper in one plastic box. _x000D_ A complete set of most common and useful electronic components. _x000D_ It is extremely easy for fancier to control and use these modules. _x000D_ The sensors come in a handy protective plastic box. _x000D_ Sensors to detect temperature, humidity, sound, light, infrared, motion and many other commonly-used properties. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Box Material: PVC _x000D_ Box Size: 27.5 x 17.6cm / 10.82 x 6.93" _x000D_ Module Quantity: 37 _x000D_ Weight: 405g(approx.) _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 x Joystick XY Module_x000D_ 1 x Flame Sensor Module_x000D_ 1 x RGB LED Module_x000D_ 1 x Heartbeat Sensor Module_x000D_ 1 x Light Cup Module_x000D_ 1 x Hall Magnetic Module_x000D_ 1 x Relay_x000D_ 1 x Linear Hall Module_x000D_ 1 x SMD RGB Module_x000D_ 1 x 7-color Flash Module_x000D_ 1 x Tilt Switch Module_x000D_ 1 x TEMP 18820 Module_x000D_ 1 x Big Sound Module_x000D_ 1 x Touch Module_x000D_ 1 x Two-color LED Module_x000D_ 1 x Laser Emit Module_x000D_ 1 x Ball Switch_x000D_ 1 x Analog Temp Module_x000D_ 1 x Small Sound Module_x000D_ 1 x Digital Temp Module_x000D_ 1 x Two-color Module_x000D_ 1 x Button Switch_x000D_ 1 x Photo resistor Module_x000D_ 1 x IR Emission Module_x000D_ 1 x Tracking Module_x000D_ 1 x Buzzer Module_x000D_ 1 x Reed Switch_x000D_ 1 x Shock Switch_x000D_ 1 x Temp and Humidity Module_x000D_ 1 x IR Receiver Module_x000D_ 1 x Avoid Module_x000D_ 1 x Passive Buzzer Module_x000D_ 1 x Mini Reed Module_x000D_ 1 x Rotary Encoder Module_x000D_ 1 x Analog Hall Module_x000D_ 1 x Tap Module_x000D_ 1 x Light Blocking Module _x000D_ _x000D_ _x000D_ Note:_x000D_ 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding._x000D_ 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.