Because of the lower price point of PWM controllers they are often less configurable than MPPT controllers. Still, PWM controllers with configurable setpoints do exist.
The Duo (two battery) line is configurable with MSView.
It is rebranded as the MISOL B series at parity or slight markup.
The Viewstar BN series is configurable from the controller or from MT-50. It is available in 10A, 20A, 30A, 45A, and 60A models.
It is rebranded as the Renogy Viewstar in 20A and 30A models at 2x the price.