Features: 37 in 1 / 45 in 1 Sensors Assortment Kit Sensor starter Kit Fit for Arduino MCU Education Infrared sensor receiver module Outlets and voltage differ internationally.Please check compatibility Package Includes: 1 Set x Sensor Modules Specifications: 37 PCS Kit Includes:Joystick sensor/Relay module/Microphone/Small microphone sensor/Tracking sensor/Obstacle avoidance /3 color LED sensor/ Two-color LED/ Small two-color LED/3 color RGB/Colorful flashing LED/ Infrared emission /Infrared receiving /Linear Hall sensor /Flame- Sensor / touch sensor/ temperature sensor/Active buzzer/Passive buzzer/ reed switch module/ Mini reed /Finger test heartbeat/Laser- head sensor /Key switch module/Vibration switch sensor/Rotary encoder sensor /Magic light cup sensor/Tilt- switch module/Photoresistor sensor /Temperature humidity sensor/Analog Hall sensor /Hall magnetic sensor/Analog temperature sensor/18B20 sensor/Knock sensor /Light Interruption Sensor /Mercury-switch module 45PCS Kit Includes: PS2 joystick joystick module/Infrared sensor receiving /Laser- head sensor/Temperature and humidity sensor /Infrared emission sensor /5V Relay /Obstacle avoidance sensor / Finger detection heartbeat module/microphone sensor/Metal Touch Sensor /Flame- sensor /3-color LED module/Hunting sensor /Linear Magnetic Hall Sensor/Rotary encoder module/Active buzzer module/Magic Light Cup Module/Small passive buzzer module/Digital temperature sensor /Photo breaker module/Temperature sensor/ Two-color LED common cathode module 3MM/Mercury- Module/Hall Magnetic Sensor/3 color full color LED smd module/Mini reed /Tilt- switch module/Colorful automatic flashing LED module/Key switch module/Photoresistor Module/Vibration switch module/Knock Sensor /Temperature sensor/Analog Hall Magnetic Sensor/Microphone Sound Sensor/Large reed Module/Two-color LED module/breadboard power module/Ultrasonic module/MP1584EN step-down module/SD card read write module/Gyroscope module/Soil module/DS1302 Clock/Water level note: The measurement allowed error is1-3cm. About shlpping: All items will be shlpped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.