Spectec produces magnetic speed sensors and hall effect sensors in a variety of series. Magnetic speed sensors feature a frequency range to above 100kHz, shock and vibration resistance, dual output, hermetic sealing, and stainless steel shell materials. Hall effect sensors are zero speed sensors for magnetic targets and ferrous targets. Hall effect sensors include gear tooth sensors, magnetic sensors, position sensors, quadrature sensors and dual output sensors.

Smith Systems offers zero, proximity and standard digital speed sensors. All three are active sensors. The standard sensors operate at 5 to 30 kHz, the zero speed in 0 to 20 kHz, and the proximity sensors from 0 to 2 kHz. They also carry passive speed sensors to convert mechanical motion to A/C voltage without a power supply.

Process Control Systems offers rotational speed monitoring systems for industrial applications. They manufacture Maxigard's adjustable speed switches that utilize speed sensors.

Cherry distributes speed and direction sensors with electronics and rugged packaging in a variety of designs. Product line includes Hall effect geartooth speed sensors in industrial or commercial grade. Designs include flange mount, adjustable aluminum or stainless steel housing, and integrated right angle connector.

Access Controls offers speed switch sensors from BWI Eagle. Designs include socket mounted, NEMA enclosed, intrinsically safe for hazardous locations, 4-20mA proportional speed monitors, and overspeed monitors. Tac switch series in a plug in control unit that utilizes a non-contacting proximity sensor. Eagle Optima series features single, dual or triple channel, NEMA enclosure and non-contacting sensor. Eagle I.S. System features single or dual channel, zero speed detection and non-contacting sensor to 1 mile. Tac-Monitor utilizes a self powered 4-20mA analog signal, plug in control module and non-contacting sensor.

Marsh Electronics supplies solid state geartooth speed sensors. The GS1001-GS1002 speed sensor is circuit protected and hall effect with adjustable stainless steel housing and near zero speed sensing. The GS1005-GS1007 speed sensor is hall effect with adjustable anodized aluminum housing and near zero speed sensing.

AI-Tek delivers its magnetic sensor selection including speed speed, side look, hall and bi-directional sensors.Feature include zero speed, digital signal, custom designs and hazardous environment listing. Passive speed sensors feature full thread, general purpose, power output, high sensitivity, molded, and high temperature designs.