Georg Fischer 5909.124 Signet 7310 Switching Power Supplies 24V 7.5W. Signet 7310 Switching Power Supplies provide regulated output voltage in compact and lightweight plastic housings for DIN Rail mounting. The series includes five different output capacities from 0.42A to 4A (10W to 96W), all of which accept universal AC line voltage input and meet worldwide standards for performance and safety. These units meet the power requirements for a single system, multiple Signet instruments or other devices requiring 24 VDC operation.