A first detector is provided with a cuff adapted to be placed on an upper arm of a subject to detect noninvasive blood pressure of the subject. At least one second detector is adapted to be placed on a part of the subject to detect at least one vital sign of the subject. A single main body is detachably provided on the cuff while being connected with the first detector and the at least one second detector. A display is provided on the main body and operable to display the non-invasive blood pressure and the at least one vital sign as measurement data. A transmitter is provided in the main body and operable to transmit the measurement data to a receiver placed in a remote location.