Manuals for Humantechnik Telephone Model Document a-4542-0 Operation Instructions Manual A-4569-0 User Manual bTEL II Operation Instructions Manual FLASHTEL COMFORT 3 BT Operation Instructions Manual FLASHTEL COMFORT II Operating Instructions Manual flashtel comfort II f Operating Instructions Manual flashTel eco Operating Instructions Manual scalla 1 Operation Instructions Manual scalla 2 Operation Instructions Manual scalla SOS User Manual