3pins sensor-- the hall effect sensor can interface directly with logic circuits such as transistor. Replacement switch 3pins-- it has a simple design, but very practical in use, giving you a good using experience. Color: Multi Size: 1.60X0.40X0.10CM HAWILLOSCH 10pcs Hall Effect Sensor Integrated Circuits Switch 3pins Hall Parts Switch Type Sensor Hall Sensor Hall Effect Parts 3pins Switch 3pins Sensor Brushless Electric Motor Halls Parts 3pins sensor-- the hall effect sensor can interface directly with logic circuits such as transistor. Replacement switch 3pins-- it has a simple design, but very practical in use, giving you a good using experience. Switch type hall effect sensor-- hall effect sensor switches are suitable for electronic toys, all household appliance.