37/Set Sensor Assortment, Infrared/Temperature/Avoid Obstacle/Buzzer Sensor Etc Product Details Note: We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 37Pcs One set contains 37 different sensor modules that give you a comprehensive understanding of the basics of Arduino and sensors. A complete set of the most common and practical electronic components of the Arduino is the perfect choice for electronics enthusiasts. Arduino enthusiasts can easily control and use these modules. Including temperature sensors, water level sensors, pressure sensors,,infrared receiver modules, etc., to meet your different needs. Whether you are learning Arduino or other controllers, sensors are a must, because we have to control the data, such as photoresistors, temperature sensors, infrared receiver modules, etc. are often used. This time, we put the sensors that most learners need in a suit, so that everyone can get 37 sensors at a time, which is convenient for everyone to use and learn. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.