el pulsador - button (that is pushed, as on a machine or Web page), push button, doorbell buttonSpanish example: Cuando la víctima pulsa el pulsador se activan los micrófonos ocultos.
English example: When the victim pushes the button the hidden microphones are activated.
Source: el pulsador - button (that is pushed, as on a machine or Web page), push button, doorbell button (https://www.123teachme.com/spanish_feeds/word_of_the_day/2020/10/23)