To provide a controller for an electric shutter, by which there is no possibility of an interference and an obstacle detecting signal can be received preferentially even when the radio waves of an obstacle detector are received simultaneously during remote control operation and even when remote control operation is conducted during the radio-wave reception of the obstacle detector.

In the controller for the electric shutter with a remote-control operating means, an obstacle detecting means and a receiver receiving a radio signal from the remote-control operating means and a radio signal from the obstacle detecting means and transmitting the radio signals to an open-close control section, the receiver has one common reception section, the radio signal from the remote-control operating means and the radio signal from the obstacle detecting means are radio waves or light having mutually different carrier frequency, each signal received by one reception section is discriminated and transmitted to the open-close control section, and the discriminated and obtained signal from the obstacle detecting means is processed preferentially at all times to the discriminated and obtained signal from the remote-control operating means.