Lot of 4 DKS Doorking 1835-010 Control Board & 1891-010 PCB display LCDs. Previous owner had a surveillance/security installation company. These seem like swap-outs from jobs as the serials on the boards dont match the boxes & plastic bags. Two boxes have notations on them, Bad & Good, two of the boards are missing a center chip (7th & 8th pictures). The item "Lot of 4 DKS Doorking 1835-010 Control Board & 1891-010 PCB display LCD AS IS" is in sale since Thursday, February 6, 2020.This item is in the category "Business & Industrial\Facility Maintenance & Safety\Surveillance & Alarm Equipment\Alarm Systems & Accessories\Alarm Control Panels & Keypads". The seller is "ahtc_inc" and is located in Jamaica, New York. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Bahrain, Croatia, Malaysia, Aruba, Grenada, Barbados, Bermuda, Brunei darussalam, Egypt, Iceland, Jordan, Cayman islands, Maldives, Nicaragua, Paraguay, Uruguay, Antigua and barbuda, Belize, Dominica, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Bangladesh, French guiana, Guernsey, Gibraltar, Jersey, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Oman, Pakistan.