PLC Center.com distributes ultrasonic proximity sensors and RF capacitance and inductive proximity, and photoelectric proximity sensors manufactured by a number of companies including: CTRL Systems Inc., Banner Engineering, Pepperl & Fuchs, Magnetrol, and Siemens.

Spectec designs and manufactures near zero speed, non-magnetic drag FR proximity sensors that feature a frequency range of up to 5000 Hz. The sensors detect targets through a non-magnetic metal wall that feature no magnetic braking effect. The sensors are used to detect micro-motion in the textile industry, and bearing run-out detection.

Turck USA manufactures capacitive proximity sensors, inductive proximity sensors, and ultrasonic proximity sensors. Capacitive proximity sensor types include: barrel style with quick disconnect or terminal chamber, barrel with potted-in cable, intrinsically safe, long range, and rectangular styles. Inductive sensors types include analog, barrel, bottle and can, die protection/stamping, high temperature, long range, miniature, and rectangular.

Avago Technologies supplies optical proximity sensors used within industrial, automotive, and consumer applications. Depending on type, the proximity sensors feature a maximum detection distance of 0mm - 60 mm, and supply voltage ranging from 2.4 to 3.6 V. Proximity sensor types include: integrated optical, signal conditioning IC, and analog output reflective.

Contrinex is a manufacturer of inductive proximity sensors, photoelectric proximity sensors, ultrasonic proximity sensors, and capacitive proximity sensors. The ultrasonic sensors feature sensing range from 0 to 1500 mm, while the capacitive sensors feature operating rates from 2 to 15. Inductive proximity sensor types include: all metal F1, analog, cable-position, food/seawater, high pressure, high temperature, long distance, sealed, standard, and welding.

Keyence Corporation of America manufactures amplifier-in-cable, compact proximity sensors; self-contained proximity sensors; and long-distance, separate-amplifier proximity sensors. The amplifier-in-cable sensors feature a sensor head diameter of 3 mm for cylindrical type of M5 for threaded type. The long distance sensors are available with 17 different sensor heads and feature detecting distances twice that of conventional sensors.

Pepperl & Fuchs manufactures inductive analog proximity sensors with 4 to 20 mA output signals, and integrated speed motors with up to 100 Hz operation. The sensors are used to detect metallic objects within machinery and automation equipment. The company also builds capacitive sensors - used for the detection of liquids, grains and powders - and magnetic field sensors.

Red Lion Controls manufactures inductive proximity sensors that feature maximum frequencies of 5 kHz or 500 Hz. With maximum sensing distances of 1.5 mm or 10 mm, the inductive sensors are available in five sizes with three sensing distances. The company also produces inductive, stainless steel case proximity sensors; and "flat pack" rectangular proximity sensors, which have a maximum sensing distance of 2 mm or 10 mm. and are used in limited-space applications.

HSI Sensing manufactures a number of proximity sensor types including: low profile, high power, float, steel sensing, surface mount, industrial/alarm, threaded, tubular, lug type, and PC board. Depending on type, the proximity sensors are used for farm equipment, moving tractors, RV hydraulic jacks, food processors, airplane controls, pacemakers, burglar alarms, anti-tank missiles, revolving doors, and liquid level sensors.

Kinequip Inc. distributes proximity sensors manufactured by Sunx, Turck, Baumer, Canfield, Contrinex, Malema, Murrelektronik, Tapeswitch and Wika. Proximity sensor types include: capacitive, cylinder position/magnetically-actuated, flow, inductive, safety, photoelectric, laser, light curtains, measurement, level, pressure, fiber optic, temperature, and ultrasonic.

Power Components Inc. distributes Banner Engineering-manufactured photoelectric proximity sensor types including: miniature, barrel, modular, limit switch-style, stainless steel, intrinsically safe, quick disconnect, AC & DC, universal voltage, bus compatible, and teaching.

Steven Engineering distributes proximity sensors manufactured by Banner Engineering, Red Lion Controls, Danaher Control/Namco, Schneider Electric, TopWorx, Turck, United Electric, Honeywell Sensing and Control, IDEC ISSC, and Pepperl+Fuchs.

Steiner Electric Co. supplies inductive and capacitive proximity sensors manufactured by Banner Engineering and Turck sensors to the northern Illinois market.

TSI Solutions distributes Turck and Banner Engineering-brand inductive and capacitive proximity sensors. TSI also supplies flow and pressure sensors, cylinder position sensors, photoelectric and ultrasonic sensors, vision sensors, and measurement and inspection sensors manufactured by the two companies.

BCS Motion Inc is a distributor of motion control components that carries SICK brand sensor products including industrial proximity sensors. Types include inductive proximity sensors, capacitive proximity sensors and magnetic proximity sensors.

Electro-Sensors is a supplier of hazard monitoring systems and machine monitoring sensors for industrial applications. Available products include proximity sensors with features such as solid state construction, non-contact sensing, corrosion resistant metal housing, LED operation indicatior, CMOS compatible output, high speed repeatability and short circuit protection.