Slave door phone near me, Inter Phone supplier malaysia, Inter Phone Installation near me, Commax Interphone near me, DP-4VHP malaysia
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Function:
- Talk with a visitor
- Door release
- Room to room
Specification:
- Power source 3V
- Wiring 4wires
- Distance 28m(Ø0.5) / 50m(Ø0.65) / 70m(Ø0.
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