The 900800900 with Signallers accessories is an electronic part manufactured by Auer Signal. It is composed of an Eco Modul 70 base extension with an IP66 rating, meaning that it is dust-tight and waterproof. This product is suitable for use in industrial operations, with many features such as signal synchronization, multiple relay commands, signal monitoring, and so on. It is also compatible with various protocols including CAN, Modbus, Profibus, and Ethernet.