Marsh Electronics offers a variety of magnetic sensors. The MP1001 Series magnetic position sensors have electrical immunity protection and are compatible with unregulated power supplies.  Hall-based magnetic proximity sensors include the MP1014 Series in low-profile, flange-mount housing, MP1005-MP1007 Series in adjustable, threaded housing, and MP1013 Series in snap-fit mounting.

NVE Corporation offers an array of magnetic sensor options. Within their product line are medical sensors, which are solid-state components as small as 1 mm2, sensitive to magnetic fields as low as 1 Oe (0.1 mT). Also available are GT Sensors designed for detection of gear teeth and magnetic encoder wheels for industrial speed sensing; they provide a 50% duty cycle output with wide airgap and temperature tolerances, as well as low profile packages. A host of other magnetic sensors are available, as well, such as analog sensors, digital sensors, and current sensors.

Sensor Solutions manufactures non-contact magnetic sensors for the industrial, agricultural, solar energy, wind turbine, and related markets. They offer single-channel gear tooth speed sensors that use Hall effect technology to produce a digital output as gear teeth pass by the sensor, and Hall switch sensors and magnetoresistive switch sensors to determine linear and rotational speed, as well as direction and position, of targets. Single-channel target tracker gear tooth sensors, which send digital pulses in the presence of metal without the rotational alignment of a Hall effect sensor, can be used to determine speed on bolt heads, holes in gears, etc. In addition to these three options, Sensor Solutions offers more than a dozen others, include quadrature 2-channel gear tooth sensors, speed direction gear tooth sensors, speed direction quad gear tooth sensors, dual output Hall switch sensors, Hall latch sensors, and digital and analog ferrous metal detection sensors.

TTI carries Honeywell magnetic speed and position sensors that use Hall effect, magnetoresistive, and variable reluctance technology. Available speed sensors start with the 1GT gear tooth sensor with an operating speed >100 KHz for sensing ferrous metal targets, and end with the SNDJ Series, T4C double Hall effect sensor, which has a 1.5 mm sensing range and two back-biased Hall effect ICs that are zero-speed capable for use as a proximity switch. Position sensors include the bipolar Hall effect SS30AT, which offers reverse polarity protection and stable output over a -40 to +125 degree Celsius temperature range; unipolar Hall effect 103SR for position and RPM sensing in non-corrosive applications; and omnipolar magnetoresistive 2SS52M, which offers digital output in response to very low magnetic fields.

Governors America Corp. provides magnetic speed sensors for the detection of ring gear teeth and other ferrous projections.  With a variety of dimensions, these sensors offer 0.025" to 0.035" proximity to gear teeth, -65 to +225 degree Fahrenheit temperature range, 0.5 to 30 V RMS output, and 30 to 1,200 ohm resistance, depending on the sensor.