DHI-ARD821-W2(868)-B

"8-channel local alarm input (expandable to 72 channels); supports NO/NC detector, detector tamper, short circuit and mask alarm. 4-channel alarm output (expandable to 84 channels); supports forced start/shutdown, auto control, and alarm linkage. Multiple zone types, such as instant zone,"

"Effectively respond to a wide spectrum of fires including slow smoldering fires SMT design, high stability DC9V-DC15 power voltage Low standby current Compatible with 2, 5 and 9 series alarm controller Relay NO output and LED indicating alarm"