Bistable Switch / B-Magnet Switch

The standard bistable switch does not differentiate between normally open and normally closed states due to identical labeling. Approximately 95% of elevators utilize the normally open configuration. In cases of ambiguous distinction, it's advisable to procure four switches, ensuring reliability. For reversing the direction, replace all four switches simultaneously, employing a magnet to rotate their surfaces, reinstating the original authentic configuration on-site.