Set of 37 sensors includes: active buzzer, passive buzzer, common cathode RG LED, common cathode two-color LED, RGB LED, RGB colorful LED, knock, shock switch, photo resistor, push button, tilt switch, infrared transmit, hydrargyrum switch, colorful auto flash, magnet-ring, hall, infrared receiver, analog hall, magic ring, rotate encode, light break, finger pulse, magnetic spring, obstacle avoidance, tracking, microphone, laser transmit, relay, analog temperature, 18b20 temperature, digital temperature, linear hall, flame, high sensitive voice, humidity, joystick PS2 and touch.