The Triple-R redundancy safeguard protects Agent Releasing Circuits (ARCs) from inadvertent activation caused by electrical transients, power surges, or microprocessor disturbances (Page 3) [1].
To activate a release, the system requires three concurrent signals: the main microprocessor must issue two separate release commands of opposing polarity through independent channels, which are then combined with a third signal from the panel watchdog timer to verify proper microprocessor operation (Page 2) [1].
