Security Door Controls SDC CR4 Four Station Relay Module JMAC# SDC-CR4 Door Control Relay Module, 4-station, 120 Milliampere At 12/24 Volt Dc, 4.25" Length X 3.375" WidthUPC: 712905237527Technical Specifications: MSRP: Was: Now: $130.00 In Stock Expedited Shipping Available Need it Tomorrow? Need it Tomorrow? Select the NEED IT FAST shipping option at checkout and a member of our team will contact you promptly with any available Expedited Shipping options once we receive your order. Add to Cart