Alarm device for bed, designed to warn acoustically or audibly of the attempt to lift the bed of the subject to be controlled, being equally applicable to chairs, armchairs and the like and being constituted from a housing in which it is located. An electrical circuit with a control element, a power supply battery and a loudspeaker constituting the alarm sound element and a lamp as acoustic warning element is provided, characterized in that the control circuit is connected to a capacitive sensor applicable to the subject that is aims to control, capacitive sensor that defines the detection means of a possible distance or abandonment of the subject with respect to the bed or chair in which it is located, and consequently the means of triggering the corresponding sound and/or acoustic alarm. (Machine-translation by Google Translate, not legally binding)1. Dispositivo de alarma para cama, previsto para avisar de forma acústica o sonora del intento de levantamiento de la cama del sujeto que se quiere controlar, siendo igualmente aplicable a sillas, butacas y similares y constituyéndose a partir de una carcasa en la que está previsto un circuito eléctrico con un elemento de control, una batería de alimentación eléctrica y un altavoz constitutivo del elemento sonoro de alarma y una lámpara como elemento avisador acústico, se caracteriza porque el circuito de control está conectado a un sensor capacitivo aplicable al sujeto que se pretende controlar, sensor capacitivo que define los medios de detección de un posible distanciamiento o abandono del sujeto respecto de la cama o silla en la que esté situado, y consecuentemente los medios de disparo de la correspondiente alarma sonora y/o acústica.
