The 16DO module provides 16 low-current relay outputs; twelve of the relays have Form A contacts and four relays have Form C contacts—their current switching capability is shown at right. The FRN1491 option provides a module having all electrically-energized relays (a single coil relay; pass current continuously through the coil to activate the relay). Each relay has an internal feedback contact that the application may use to verify that the relay is open or closed. All connections to the relays are made via plug-in screw terminals on the module and all relays have surge arresting devices installed. Note: Magnetically-latched relays should be used in systems that require long operation from the backup battery when the mains power fails; electrically-energized relays should be used when it is mandatory that the relays open following loss of power or when the module is removed from the RTU. Availability: Usually ships in 6-8 weeks. FRN1491 >>>> JAN 31, 2008 <<<< LAST DAY TO ORDER NEW MOSCAD/MOSCAD-L UNITS, PARTS & ACCESORIES When purchasing MOSCAD hardware/software or any product with NO dollar amount, a quote containing ALL PRICING will be e-mailed before the order is processed.