Von Duprin 900-4RL Optional Distribution Board, 4 Relay Board Integrated Logicy Board Output
Product Details
900-4RL:4 Relay board integrated logic for controlling security interlocks, auto operators and time delays.
900-4RL-FA:4 Relay board integrated logic for controlling security interlocks, auto operators and time delays.
Emergency interface relay integrates with fire alarm and is used to cut power in case of emergency.