1. Which Technology use on SX20 Remote control (this answer will answer question 3 also) à IR
2. Please give us actual model of All Cisco SX20, Camera and all related cisco equipment à attached
3. If we put all SX20 and Extender inside hide cabinet (this cabinet is beside LED TV) it OK or not. (Remote control can still control the box) à yes – as the camera has the IR built into it as well as the main unit (codec). We can select the codec or the camera to receive the IR signal.
4. All Standard LED Wall Mount can put all SX20 and Extender right? --> you mean, can hide all devices behind the TV? Yes. The wall mount that we suggested was to allow our vendor, and any support attempt, to be very easy to move TV out, without lifting. We prefer the TV mount to be “swivel type” such as the pic attached.