STR-421 two-button roller shutter controller STR-421

The STR controller is designed to control roller shutters (up-down) or other objects (e.g. gates) driven by a single-phase AC electric motor by means of momentary switches (e.g. bell switches). The controller can work as a stand-alone device (intended for opening/closing one roller shutter), and it is also possible to combine controllers into groups enabling central control of many roller shutters.