The program has all programming functionalities without time limitation.
Only limitation is that you CANNOT save and load created relays conditions(program). On every restart of the program you must define conditions from scratch.
Sensors mode in desktop application doesn't have any limitation, web application has 10 min. session time limit
When the board is connected to the PC and the PC is restarted, the relays will be toggled several times, but only 8 channel relay board. This is because of the structure of the FTDI chip. The solution for this issue, for example, can be to connect additional switch or relay for power supply of electrical loads. Switch it ON when the system is started and before the program runs.
4 channel relay board doesn't have this problem