The Linear 109201 Power Supply with Wiring Harness is an OEM replacement assembly from the Linear brand (Nortek Security & Control) designed to restore reliable low-voltage power delivery to compatible Linear control equipment. Used in select Linear systems, this factory power module and pre-terminated harness provide the correct connectors and lead lengths for a direct fit inside the host enclosure, helping repair units that exhibit power-related faults such as intermittent resets, no-boot conditions, or accessory dropouts. It is intended as a like-for-like replacement part identified by the exact part number in the device’s service manual or parts list and is commonly applied in Linear access control and operator controllers used in residential and commercial installations.
Installation involves removing power to the host device, mounting the replacement in the original location, and connecting the included harness to the designated board headers per the manufacturer’s wiring diagram. There is no configuration on the supply itself; however, it is good practice to verify controller settings and operation after power is restored. For safety, follow all lockout/tagout and electrical code requirements and have a qualified technician perform service if you are not familiar with Line-voltage work. Because electrical ratings can vary by host model, verify input and output specifications and compatibility in the official Linear documentation for your specific controller before purchase and installation.