Commax Duplex Audio Door Phone DP-LA01 / DR-2K

• 2 wire connection with non-polarity from a floor distributor

• Talk with a visitor and doorlock release enable

FUNCTION
• High audio quality adopted PLL function (Phase locked loop)
• No cross of wires
• Indicating in-use status
• Available to install anywhere with AC outlet
• Enabling long communication through PTT (Priority call function)
• Adjustable sound level