One bureau GSM card extension 2 innings GSM card extension three innings GSM card extension four innings GSM card extension UPS power private antenna car through phone room phone with the phone's top cable phone pit cable
Type of intercom:
The voice is not visible
The Smart Type:
other of the other
Elevator wireless talkback:
GSM Elevator Wireless Phone Lift Talkback System
Three-party call of the elevator talkback system:
Elevator wireless talkback card extension for the phone
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Items weight estimation 0 g, subject to actual weight
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