Relay Documentation Below you will find all documentation for the Relay product line. Documents are grouped by categories. If you do not see what you are searching for or need further assistance, contact our 24/7 support team at (800) 875-5285. Operation Manuals Snow Melting & Slab Heating Installation Manual (Canada)SNOW-MELT-MANUAL-CANADA-10221-C Technical Specifications Snow Melting Relay Panel Specifications for RLY-4PL, RLY-8PL or RLY-12PLSM-RELAY-PANELS-RLY-4PL-RLY-8PL-RLY-12PL-10210-A Snow Melt PlaqueSNOW-MELT-PLAQUE-A Wiring Diagrams 4/8/12PL Relay Wiring Diagram for Snow Melt Mats & Cable 120V/240VRLY-4-8-12PL-10115-A