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External power for -003 and -004 models, Connecting a model 530 series strobe – GAI-Tronics 300 Series RED ALERT Emergency Telephone Manual User Manual

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External power for -003 and -004 models, Connecting a model 530 series strobe | GAI-Tronics 300 Series RED ALERT Emergency Telephone Manual User Manual | Page 22 / 48 External power for -003 and -004 models, Connecting a model 530 series strobe | GAI-Tronics 300 Series RED ALERT Emergency Telephone Manual User Manual | Page 22 / 48