曾凡超
Published at: 2025-12-23
Installation description
For Syscom 421S
Installation：
1. Installing the TX vertically on a camera gives best performance. Place the RX at a height of 1.7m with a tripod stand to avoid human crowd
2. There should not be a wall in between TX and RX, especially concrete or glass
3. Distance between RX and TX should be 3m and above, else the pairing may be failed
Multiple sets：
1. Every RX should have a distance of at least 0.5m or above
2. Run the channel scan with either one of the RXs (refer 4.3 for guidance on Channel Scan )
3. There should be a gap of 2 channels between 2 sets of wireless video transmission device to avoid interference
4. In China, maximum of 4 sets of 9842D can be used in a same location
Installation Notes
1. Wireless video transmission is working at 5.1~5.8GHz frequency, it is recommended to scan the channel before using in an environment which consists few routers. This is to avoid transmitting in a disrupted channel
2. Distance between RX and TX should be 3m and above, else the pairing may be failed
