A base station antenna for a telecommunications system comprising: a plurality of beam systems supported by an antenna housing, each beam system comprising a plurality of antenna elements for directing a beam of electromagnetic energy in a propagation direction, a plurality of phase shifters operatively connected to the antenna elements for tilting the beam propagation direction, a control device operatively connected to the phase shifters for operating the phase shifters to tilt the beam propagation direction, a gear-motor unit (90a, 90b, 90c, 90d), comprising a phase-shifter control motor, operatively connected to the control device for electro-mechanically driving the control device to tilt the beam propagation direction, and a position sensor (92a, 92b, 92c, 92d) for sensing the position of the phase shifter control motor; the base station antenna further comprising: a multi-device control unit operative to selectively control the beam propagation direction of each beam system, the multi-device control unit comprising a position sensing interface, a motor control interface, a power control circuit, a communications interface and an internal addressing interface; and at least one modular switching device (14a, 14b) configured to interface between the multi-device control unit and the gear-motor units and position sensors of the beam systems to allow a single set of control electronics of the multi-device control unit to selectively control the beam propagation direction of each beam system, by selectively connecting the motor control interface and the power control circuit of the multi-device control unit to the gear-motor units of each beam system, and by selectively connecting the position sensing interface of the multi-device control unit to the position sensors of each beam system. a plurality of beam systems supported by an antenna housing, each beam system comprising a plurality of antenna elements for directing a beam of electromagnetic energy in a propagation direction, a plurality of phase shifters operatively connected to the antenna elements for tilting the beam propagation direction, a control device operatively connected to the phase shifters for operating the phase shifters to tilt the beam propagation direction, a gear-motor unit (90a, 90b, 90c, 90d), comprising a phase-shifter control motor, operatively connected to the control device for electro-mechanically driving the control device to tilt the beam propagation direction, and a position sensor (92a, 92b, 92c, 92d) for sensing the position of the phase shifter control motor; the base station antenna further comprising: a multi-device control unit operative to selectively control the beam propagation direction of each beam system, the multi-device control unit comprising a position sensing interface, a motor control interface, a power control circuit, a communications interface and an internal addressing interface; and at least one modular switching device (14a, 14b) configured to interface between the multi-device control unit and the gear-motor units and position sensors of the beam systems to allow a single set of control electronics of the multi-device control unit to selectively control the beam propagation direction of each beam system, by selectively connecting the motor control interface and the power control circuit of the multi-device control unit to the gear-motor units of each beam system, and by selectively connecting the position sensing interface of the multi-device control unit to the position sensors of each beam system. a multi-device control unit operative to selectively control the beam propagation direction of each beam system, the multi-device control unit comprising a position sensing interface, a motor control interface, a power control circuit, a communications interface and an internal addressing interface; and at least one modular switching device (14a, 14b) configured to interface between the multi-device control unit and the gear-motor units and position sensors of the beam systems to allow a single set of control electronics of the multi-device control unit to selectively control the beam propagation direction of each beam system, by selectively connecting the motor control interface and the power control circuit of the multi-device control unit to the gear-motor units of each beam system, and by selectively connecting the position sensing interface of the multi-device control unit to the position sensors of each beam system.