Many wireless relay modules can support up to three full programmable alarm levels with time delays before or after an alarm. Most relay modules have multiple double-pull, double-throw relays for alarms or faults. A wireless relay module can be installed next to a group of fan starters that can activate a fan for a certain zone. This relay module provides flexibility in new design buildings as well as reduced installation costs in existing buildings. For more information, contact Jackson Systems at 888-652-9663 or find out more about gas detection at www.jacksonsystems.com.