Spec Sheet Preview: The Alpha Communications® / TekTone DS100 Door Sentry™ series latching annunciator is designed for alarm indications of an opening or a closing of a dry contact, or for other emergency-call/ panic type applications. When a remote contact switch is activated, the DS100 annunciator will sound an electronic alarm (tone) and will light, indicating the location of the alarm. The tone signal can be silenced at the master station (and/or at the optional IR019B remote alarm indicator). The individual switch …