With this transmitter, roller shutters or external blinds and blinds can be opened and closed either by sunlight, time control or manual operation. A special highlight is the integrated solar sensor, which controls the shade of your rooms regardless of the time of day. As soon as the sunlight reaches the sensor attached to the window pane, it automatically moves the curtain to the position of the sensor. If the sunlight subsides, then the sensor raises the curtain again. In addition, the curtain can be controlled with this transmitter via a timer switch or manual push of a button.