Devices for functional safety
Magnetic safety sensors and actuators (cylindrical, coded N51x and N52x-N55x series, Hall and ATEX versions) and single-function safety modules for guard monitoring.
Licensed distributor
Safety sensors & level control
STEM S.r.l., based in Cura Carpignano near Pavia, Italy, designs and makes magnetic sensors and safety electronics in four ranges: devices for functional safety, devices for elevators, devices for industry and liquid level control.
Pick a range below to see its products. Product pages link to STEM's data sheets and manuals.



Magnetic safety sensors and actuators (cylindrical, coded N51x and N52x-N55x series, Hall and ATEX versions) and single-function safety modules for guard monitoring.
Shaft sensors, magnets and fixing kits, safety modules for door bypass, floor levelling and uncontrolled car movement (UCM), the automatic rescue device, photocells, control units and battery chargers.
Reed and Hall magnetic proximity sensors, encapsulated magnetic units and permanent magnets, ATEX sensors for hazardous areas, angular and linear displacement sensors, control units and battery chargers.
Vertical and horizontal magnetic float level switches, a capacitive level sensor and accessories.
Open the full STEM catalogue to filter by product group, safety rating, housing width, supply voltage and more, or search by part number.
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