1/1 Signallers Gas Warning LED Display with Acoustic Signalling Device discontinued Product code: PW-104-TOA-X TOA Gas Warning LED Displays with Acoustic Signalling are used for signalling alarm conditions internally in underground car parks. See full description Product description TOA Gas Warning LED Displays with Acoustic Signalling are used for signalling alarm conditions internally in underground car parks. The displayed string is accompanied by a pulsing acoustic signal. As it is possible to use TOA displays on walls or ceilings, the signalling system provides an additional source of safety. The displays cannot be used in areas defined as gas explosion hazard zones. Related products Control Unit ModulesAlpa MOD LED1Control Unit ModulesAlpa MOD LED 8Control UnitsSigma Control L