The AUMA Blinker transmitter (item number K000.664A, serial number 558.0) is a component for the optical signaling of valve positions or operating statuses. This signaling device is an integral part of automation solutions where feedback on valve states is essential. The device serves to visually represent status information and is typically installed in control cabinets or on valves. It allows operating personnel to quickly assess the condition of the respective valve. Specifications regarding performance or connection type can be found in AUMA’s technical documentation. The Blinker transmitter is used in automation technology, particularly for monitoring control or shut-off valves in water management, energy supply, or industrial process pipelines. A request for this spare part is the first step in ensuring plant availability.