DC redundancy module - Siemens (SITOP Redundancy modules - PSE202U) - order code #6EP19642BA00 - Output 40A summation current / 19-29Vdc - input 19-29Vdc - DIN rail mounting (30mm width) - Screw-clamp term. connections - with 1 x digital output (NO Normally Open contact) (signal both voltages OK) (signals that both voltages are above a threshold) - UPC #040892921199