BOR1 is a single relay output module designed for the UDM35 modular digital panel meter system. It provides one independent SPST (Single Pole Single Throw) relay output with AC1 rating of 8A at 250VAC, DC12 rating of 5A at 24VDC, AC15 rating of 2.5A at 250VAC, and DC13 rating of 2.5A at 24VDC. The module features 4000 V_RMS isolation between the measuring input and power supply input via opto-couplers, ensuring robust electrical isolation. The relay output supports multiple alarm functions including over-range alarm, up alarm, down alarm, and latch alarm modes with adjustable thresholds from 0 to 100% of the displayed range. This module is ideal for applications requiring relay-based alarm signaling and control in industrial measurement and monitoring systems.