4 bell, 5 bell cutoff, 6 automatic bell test – DMP Electronics XR2500F User Manual
Page 41: 8 standard or encrypted line security, 9 wireless audible annunciation option, 7 standard or encrypted line security, 8 wireless audible annunciation option
4 bell, 5 bell cutoff, 6 automatic bell test | 8 standard or encrypted line security, 9 wireless audible annunciation option, 7 standard or encrypted line security, 8 wireless audible annunciation option | DMP Electronics XR2500F User Manual | Page 41 / 60
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