The SICK DGS60-A4Z0-S10 is a Receiver unit for the deTec60 Core series of Type 4 safety light curtains. It is a critical component of an electro-sensitive protective device (ESPE) system designed to safeguard personnel by detecting the presence of objects or persons within a defined hazardous area of machinery. When the infrared light beam between the Receiver and its paired Transmitter is interrupted, it sends a stop signal to the machine's control system.