Latest/ Patented Audio Intercom Intercom/ Unlock/ Transfer First ABS Material Special Pantented Clear and Good quality Voice Detailed Product Descriptio2012 hottest selling Audio Door phone Intercom and unlock Speak to the outdoor when standby Easy installing, 2 wire2012 hottest selling Audio IntercomImage:

Features and Advantages

1. Latest chips, clear intercom effect2. Intercom and unlock when someone call at the outdoor3. Pich up the indoor phone, press "TALK" buttom to speak to the outdoor when standby4. 2-wire system, Easy installing.

5. 2 Buttoms, Easy operation. 

6.  Nice appearance and High cost performance.

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2012 hottest selling!2 wire Audio Door phone---intercom and unlock

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