Method and equipment for the secure and convenient input of control

Abstract

In this wireless remote control system, control signals and reporting-back signals are bidirectionally transmited between at least one portable transmitter-receiver unit, a stationary transmitter-receiver unit and a control. The portable transmitter-receiver unit contains a microprocessor and is carried, for example, by hand or in a clothing pocket. Control commands are input, depending upon their frequency of occurrence, by way of a ten-key keyboard, fixed keys or stored in a storage and transmitted as control signals via an operating mode selector switch selectively in either one of the operating modes 'manually by push-button' or 'automatically, permanently'. The signalling is non-public and on an indicator. The stationary transmitter-receiver unit with microprocessor is mounted stationarily in the transmission range of the associated portable transmitter-receiver unit and communicates the received control commands to the control. This remote control permits location-independent input of public and non-public operating requests into elevator installations and thereby a conveniently and secure call issue to protected storys. The method and the equipment can likewise be used for operating doors, escalators, turnstile and so forth and thus are generally suitable for controlling access and facilitating personnel traffic in buildings.