• Audio Door phone and Both side operated door lock, complete security system
• lock can be operated in case not power by pressing button available at lock itself
• lock comes free with 3 keys, so easy to operate in case power failure and open from outside
• Ringer Volume Adjustment, white color, AC operated Door phone Suitable for small office, Hospital, Villa, apartments. Clear voice and louder ringer volume Outer Unit Dimension 30 mm depth x 110 mm length x 90 mm Width

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