1PC KEYENCE LR-TB5000 LRTB5000 All Purpose Laser Sensor New. Dear friend, your happy is very important to me! We check all items before we send it out, to ensure every item sent to you is perfect. We very glad to solve all problem with you. If you Not satisfied with our item. Items must be return to us within 14 days after you receive. Do write to us and give us an opportunity to address your concerns firstly. If it is our quality’s problem, we will repair it and send the repaired item to you for free of charge. If the damage is made by wrong operation, we will ask for maintenance cost. We will be happy to assist you. We would try our best to serve you with any question / problem. We stand behind every product we sell. However, we will try our best to minimize it. You can enjoy top-quality product and high-quality services from us, Trust me that you will have a pleasant shopping experience in here.