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Command-Initiated Switch

Definition

A firing switch that requires an active remote signal from the device operator to complete the initiation circuit; categories include RF, infrared, and cellular switches.

Field
IED anatomy and triage
Requirement
Active remote signal from an operator
Categories
RF, infrared, cellular switches
Contrast
Not victim-operated or time-delay

Common questions

Why is a command-initiated switch treated differently for render-safe procedures than a victim-operated switch?+

Because a command-initiated device relies on an active operator sending a signal, jamming or shielding the receiver can be part of a render-safe strategy, whereas a victim-operated switch triggers from the target's own action and requires a different approach focused on avoiding disturbance.

How do investigators identify the specific type of command-initiated switch used after an incident?+

Recovered component fragments such as receiver modules, antennas, or SIM cards, along with signal analysis and any surviving circuitry, allow examiners to determine whether an RF, infrared, or cellular link was used, which can also help trace the device's origin or purchase history.

Related terms

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Anti-Handling Device (AHD)
A secondary circuit element that initiates the device if it is moved, tilted, vibrated, or opened; designed to defeat EOD render-safe procedures;...
DMDNB Taggant
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IEDDTU Report
IED Exploitation Data Transfer Unit report; the standardised intelligence product completed for every recovered or post-blast device, capturing all six-element characterisations, forensic...
JIEDDO / JIDA
US Joint IED Defeat Organization (established 2006, reorganised as JIDA, Joint Improvised-Threat Defeat Agency); the US DoD organisation responsible for accelerating feedback...
Six-Element IED Model
The JIEDDO/NATO analytical framework dividing every IED into six functional components: main charge, initiator/detonator, switch, power source, container, and anti-handling device. Used...
TATP (Triacetone Triperoxide)
A cyclic peroxide explosive (C9H18O6) synthesised from acetone, hydrogen peroxide, and an acid catalyst. Sensitive to friction, heat, shock, and prolonged storage....
Victim-Operated Switch (VOS)
A firing switch that is actuated by the intended victim's own movement or action, including pressure plates, trip wires, tension-release switches, and...
Water-Jet Disruptor
A standoff EOD render-safe tool that fires a high-velocity water jet at the detonator or initiation circuit, physically severing the circuit before...

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