Time relay with cyclic mode of operation: T1-20 min, T2-1 min - model wanted

Hello!
I need help in finding a suitable relay/timer switch.
I mean one in which two times can be set (ON time T1- 20 min and OFF time T2-1min). The problem in finding one is that in most cases it is only possible to start a new cycle after disconnecting and re-connecting the supply voltage. I, on the other hand, need continuous cyclic operation. I look forward to your suggestions. Regards

I don't really know what you mean.

Or do you fancy one of these time switches:

Only in these switches I don't think it can be set.

I found two relays that would fit just a bit expensive:
1) http://www.fif.com.pl/produkt/36/1197
2) http://www.fif.com.pl/produkt/36/549

Cheaper is unlikely to do it, as two regular timepieces are unlikely to be cheaper.

Take a look at the AVT1820. On and off times can be set separately. It runs in circles.
Be warned - the resistors in front of the display are to be replaced. Someone forgot about the load capacity of the whole CPU and at maximum consumption (e.g. 88) the pins can pop. If you want to build in then don't take an assembled one. The same someone did not make an effort....
greetings. Czarek

You make a bistable circuit on the immortal NE 555.

or

You buy for example an ARDUINO NANO, a 5v power supply and a relay for avr circuits with opto isolation. In the arduino you program whatever times you want (for your need, you only need to modify a little bit the times in the blink program). Type in You Tube : ARDUINO blink. Instead of the diode from the examples , you connect a relay .

555 takes care of the subject

You have not provided the relevant information:
1) is timing adjustment needed?
2) what accuracy and stability is expected/necessary?
3) is price the criterion and if so how do you value your time?
4) do you allow for a software solution?
5) do you want to install this in a switchboard on a rail or build it into some kind of device?
the result - a range of solutions from grass to grass, each with advantages and disadvantages, and there may be no optimum solution.