For The Knowtek Esd5500E Diesel Generator Governor Controller, The Engine Speed Product Details Ship from ESD5500E Engine Control Unit Compatible for Engine Brands The Engine Speed Controller ESD5500E is rugged enough to be placed in a control cabinet or engine mounted enclosure with other dedicated control equipment If water, mist, or condensation may come in contact with controller, it should be mounted vertically. This will allow the fluid to drain away from the speed control unit We have Engine Speed Control Unit ESD5500E in our Regular Stock with Reasonable Price! 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.