3 March 2021

Vigilant T-Gen2

The Hazard!

The T-Gen2 with version V2.0, 2.1, 2.2 firmware may stop playing tones or sound files. The lack of warning system may go unnoticed until the T-Gen2 is tested during the monthly test under NZ Standard 4512.

If the T-Gen2 stops playing sounds it will not produce alert or evacuation tones to warn occupants to evacuate a building in the event of a fire.

What to do...

Contact your fire detection system service company to perform a firmware update on the T-Gen2 amplifier during their next service visit. Details on how to perform the update are available from Johnson Controls.

Product Identifiers

Sold and installed via Fire service and installation companies from March 2018 to December 2019

Distributed by Johnson Controls fire detection, previously known as Tyco Safety Products or Vigilant Fire Detection.

Vigilant T-Gen2

T-Gen2 system can be installed in a fire detection panel or its own Emergency Warning system panel, either way if front controls are fitted the name – T-Gen2 can be seen on the controls.

Part number and name are also stamped on the centre of the circuit board.

See red arrows in image above for the possible locations of T-Gen2 labels.

Supplier Contact

Johnson Controls Fire Detection


03 389 5096


Responsible Agency