The SIGA-MD is a Passive Infrared (PIR) motion detection module that connects directly to the Signature loop. The module uses adaptive signal processing with gliding focus mirror optics to analyze the size, speed and shape to determine the alarm threshold. A tamper switch notifies the host system when the cover is removed.

The intelligence built into every SIGA-MD means that the module can decide when to report information and when to suppress sending information to the host system. As an example, when the SIGA-MD module is disarmed, changes of state that would normally create an alarm are recognized by the module and sent to the host as a background task. This enhances response time by removing the burden of normal room activity on the network. Should a trouble or
tamper condition be detected these events are immediately transmitted to the host helping to ensure system integrity is maintained. Once the module is armed, alarms are sent immediately
to the host.