Son device of interphone
A doorbell and doorbell technology, applied to the structure of telephones, closed-circuit television systems, etc., can solve problems such as noise, reduce the number of parts and assembly, and achieve the effects of fewer components, easy installation, and simplified structure
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[0022] Embodiments of the intercom doorbell handset device related to the present invention will be described below. figure 1 It is a perspective view of the front of the intercom doorbell device related to the present invention, figure 2 It is a perspective view of the back side of the intercom doorbell device related to the present invention, image 3 It is a perspective view of the intercom doorbell sub-machine device related to the present invention decomposed into the shell and the front of the intercom doorbell sub-machine, Figure 4 It is the back perspective view of the intercom doorbell sub-machine device related to the present invention decomposed into the shell and the intercom doorbell sub-machine, Figure 5 It is the rear view of the intercom doorbell device related to the present invention, Figure 6 It is a central longitudinal sectional side view showing the dimensional relationship of the fixing protrusion of the intercom doorbell device related to the pres...
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