The ReeR SR E4 is a versatile safety relay designed to manage and monitor various safety devices in industrial applications. It provides redundancy and fault detection, ensuring that machinery operates safely by disconnecting power during emergencies or malfunctions. The SR E4 supports single- or dual-channel control, with options for both manual and automatic reset modes. It features LED indicators for real-time status monitoring and cross-short detection between channels. The SR E4 is ideal for applications such as controlling emergency stop buttons, safety light curtains, and door interlocks.