... 2.4GHz, 4 Channel, Security CCTV Wireless Audio, Video Receiver and Transmitter| 2.4GHz, 4 Channel, Security CCTV Wireless Audio, Video Receiver and Transmitter| Specifications: Frequency: 2.4GHz ... space. Transmitter can be connected to CCTV camera and achieve different room monitoring, visual monitoring ... the single original equipment (eg, C Camera, VCD). 2. Check the two machine on the suitable ...