VL-SA74SX
Video Intercom System
Main Monitor Station (17.8 cm)
Door Station
VL-MA74SX
VL-VA504SX
In this guide, the suffix of each model number (e.g., the "SX" in "VL-SA74SX") is omitted
unless necessary.
https://security.in.panasonic.com/products/vl-sa74
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