Spec Sheet Preview: The RS101S remote tone sounder stations provide for remote audible and visual annunciation when connected directly in parallel with an Alpha Communications® AlphaEcall™ 100 series annunciator and AC219 control unit, or CM800 or DS100 series annunciator and PK2019 / PK2019A control unit. The RS101S stations feature a momentary contact Tone-Off button for tone silencing. Depressing the Tone-Off button silences the tone at all sounding locations. When the emergency initiating device has been reset, the Tone-Off will automati …