This item is a remanufactured unit for the AERO 553 Panel Digital CO Detector (553-101-001). To qualify for this pricing, the core of an existing unit that is being replaced must be returned to Guardian Avionics. Please complete an RMA request to receive an RMA number when sending the core back. There is a Core Charge of $200 will be added to order total and will be credited back to customer when a core is received in return by Guardian Avionics.
