Rockwell 440R‑S13R2 Safety Relay 24V DC Dual Channel | Enrgtech LTD by davidboltan Published: September 29, 2025 (6 days ago) Category Technology Link Rockwell 440R‑S13R2 Safety Relay 24V DC Dual Channel | Enrgtech LTD Add to Cart Rockwell 440R‑S13R2 Guardmaster safety relay 24V DC with 3 NO safety outputs and 1 NC auxiliary contact for machine guarding and E‑Stop systems.