Electro Sensors offers single relay output, dual relay output, ASi Network output speed switches. There are over a half dozen models of single relay output speed switches to choose from. Electro Sensors also offers speed sensors.

BWI Eagle manufactures speed switches and monitors of all types. The Eagle Tac Switch monitors speed and detects motion in all types of machinery. The Eagle Optima is a series of intrinsically safe critical speed switches.

Maxigard (Process Control Systems) is a manufacturer of speed switches. Their adjustable models come in single set point and dual set point configurations, and are typically used to detect slowing of the fan shafts caused by drive belt slipping. Maxigard's slow speed switch is designed to monitor slow moving conveyor belts used in dryers or ovens.

Access Control Sales is a distributor of socket mounted, NEMA enclosed and hazardous location - zero, low, high and standard speed - speed switches from BWI Eagle. Socket mounted speed switches come with a DIN rail option. NEMA enclosed speed switches offer single, dual or triple channel formats. Speed monitors are available to monitor proportional speed drives. Overspeed monitors are also offered.

Hubbell Industrial Controls manufactures six different models of speed switches that detect motion or sense overspeed or underspeed occurrences of industrial machinery or motors. Zero, slow and high speed switches come in either direct coupled or non-contact types. Many speed switches are available with NEMA 3, 4, 7, 9, 10 or 13 construction.

Schulze Manufacturing offers heavy-duty speed switches used on engines, buses, pumps, generator sets, process control, conveyors, off-highway and construction equipment. Features include high inductive load ratings of 15 amps at 6-14 volts DC and 10 amp at 24-30 volts DC. Its AC rating is 15 amps at 110/220 volts AC. These slow, high or standard speed switches offer weatherproof construction.

Mod-Tronic is a Canadian based distributor of slow and high speed switches from Dynalco Controls. The SW-100 speed switch has a single setpoint for overspeed and underspeed protection, and is DIN rail mountable. The SWT-1000 and SWTD-1000 have a single relay setpoint for over speed protection and 4-20mA isolated output. The SWT-2000 two channel speed switch/transmitter acts as two speed switches in one as it can protect two separate machines at once. Four other models are available as well.

Mid-State Instruments is a distributor of Electro-Sensors speed switches for speed monitoring, vibration sensing and motor control speeds. The SS-110 is a slow speed switch with one adjustable set point. The SCP1000 is a presettable machine speed switch that provides one individually adjustable relay set point. The FB420 is a stand alone shaft speed switch.