Electrical switch, to signal the water level in a washing machine/dishwasher, has facing flexible films with contacts and a float to press against the films to close the contacts

摘要

The electrical switch (1) has two facing flexible films (3,4) fitted in housing (2). Contacts and spacers are at facing sides of films, which can be moved between each other by pressure to make an electrical contact between them. A moving float (8) is in housing, with one side (9) against films and an opposite side (10) against a fluid which can press float against films to close contacts.