Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

MS-228, M8 Threaded Cylindrical Sensor

  • Drawing of MS-228 Threaded Sensor


30W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Contact. Higher Shock Limits. 0.75 mm pitch M8 Threaded Barrel.



Omni-polar. Does not require power for operation. RoHS Compliant. Not ESD Sensitive. Various Cables and Connectors Available. For rugged industrial use.


This M8 threaded brass sensor is built for mounting in threaded holes and switch up to 30W loads. It is particularly useful in industrial applications where distance adjustments need to be made every now and then. Various activating distances are available depending on the magnet and the AT band used. This sensor can be supplied with non-standard connectors on request. All sensors are tested 100% for Operate AT, Release AT, Static Contact Resistance and Variable Contact Resistance before packing. Being an omni-polar device, this sensor can be actuated with either a north pole or a south pole or both. Choosing the right AT band, magnet strength, and operating axis, will restrict the number of operates and releases to one.

Cylindrical and Rectangular Magnets

Standard magnets-RRE We offer a range of magnets in different sizes and shapes, specially selected to...Continue reading ->

Actuation Distances for MS-228 Cylindrical Sensor

MS-228 actuation-magnet parallel to sensor Operate and release distances for the MS-228 M8 threaded magnet sensor in the three...Continue reading ->


Contact FormA
Contact Rating (max)W/VA10.0
Switching Current (max)A0.5
Carry Current (max)A2.50
DC Switching Voltage (max)VDC230
Breakdown Voltage (min)VDC350
Contact Resistance (max)200
Insulation Resistance (min)Ω109
Capacitance (typ)pF0.2


Operate Time (max)ms0.35
Bounce Time (max)ms0.30
Release Time (max)ms0.15
Resonance Frequency (typ)Hz>2000
Operating Frequency (max)Hz500
Operating Temperature Range°C-40 to +70
Shock Resistance (½Sin wave for 11ms)G50
Vibration Resistance (10-2000 Hz)G20

Ordering Code

MS-228-(Operate Band Code)-(Cable Length in mm)-(Cable Termination Code)

Operate Band Code
Cable Termination CodeTermination Type
SStripped to 5.0 mm
TStripped and Tinned

Example: MS-228-4-500-S denotes MS-228 Threaded Sensor in 25-30 Operate Band (AT), with 500 mm cable length and Stripped ends.

Other Special Configurations: Lower Static Contact Resistance, Dynamic Contact Resistance Limit, Special Release Limits.

Usage Notes

Here are some of the recommended usage notes to ensure maximum durability of this product. The complete usage notes are available here.

Ampere Turn Selection

Reed Sensor Manufacturer Cross Reference For any application, it is important to select the correct Ampere Turn (AT) or...Continue reading ->

Effects of Temperature

Thermal sensor Effects of increase and decrease in temperature on reed based products and magnets. Continue...Continue reading ->

Product Handling

Dropping Reed switch Reed Switches, Reed Sensor and Magnet Sensors are sensitive devices that easily develop micro...Continue reading ->

Ferro-magnetic parts

Ferromagnetic parts Using Ferro-magnetic mounting parts or screws within a 100 mm vicinity of a reed switch will...Continue reading ->

Cable Handling

Twisting cables nearer to housing Cables with higher strands should be used so that there is minimal work hardening...Continue reading ->

Reed Contact Protection Circuits

Inductive Load Protection Circuit When a reed switch is to be connected to an inductive load or a...Continue reading ->


Although we can never restrict the use of a reed sensor to a particular field, the following is a list of some of the applications that the MS-216-L Magnet Sensor is known to perform well.

Magnet Sensors for Two Wheeler Side Stand Sensing

Motorcycle Sidestand Magnet Sensors are used in two wheelers to sense whether the side stand has...Continue reading ->

Magnet Sensors for Securing Fire safety and Emergency Exits

fire safety exit Normally mechanical switches are used, but as fire safety doors remain closed for many...Continue reading ->

Sensors for Window Sun-shade Shutter Control

window shutter With reed sensors mounted near the rotating shaft mechanism of these motors, and multi-pole...Continue reading ->

Reed Sensors to Prevent Thievery in Cargo Containers

cargo container Reed Sensors added to the GPS units serve as a theft proof device by...Continue reading ->

Reed Switches in Exhaust Emissions Sensing

Automotive exhaust fume emission A simple vane with a magnet fitted inside the tailpipe of automobiles is used...Continue reading ->

Magnet sensors for Bridge control in Airports

Reed switches in airport bridge control A bridge control operator needs to steer the bridge toward to airplane door for...Continue reading ->

Magnet Sensors in Treadmills

Reed switches in treadmill The speed of the belt is determined by positioning a reed sensor near the...Continue reading ->

Reed switches in Magnet Extensometers

Reed switches in magnet extensometer Reed Switches are used in magnet extensometer probes to monitor settlement and heave in...Continue reading ->

Magnet sensors in Adjustable Chairs

Reed switches in adjustable chairs Chairs and beds with electronic controls for adjusting tilting and height use reed sensors...Continue reading ->

Magnet sensors in End position sensing in hoists and fork lifts

Reed switches in end position sensing in fork lifts Hoists and fork lifts use hydraulics to move cylinders and pistons to life heavy...Continue reading ->

Reed switches in Floor detection in Elevators and Lifts

Reed switches in floor detection in lifts Latching reed sensors can be mounted on every floor, and a magnet on the...Continue reading ->

Reed switches in liquid detection probes

Deep bore reed switch probe Reed switch based float switches are fitted with a perforated sheet around the whole...Continue reading ->

Magnet sensors for Anchor, Rudder, and Hatch position detection

Reed switches in hatch position sensing Just as reed sensors are used in automobiles for end position and intermediary position...Continue reading ->

Magnet sensors in Anti-lock braking system (ABS)

Reed switches in ABS control system In ABS control, the onboard electronics needs to apply differential hydraulic pressure to each...Continue reading ->

Reed sensors for Two Wheeler Brake Sensing

Reed switches in Two wheeler applications Motor bikes and other two wheelers use plunger type switches for detecting depression of...Continue reading ->

Magnet sensors in Hydraulic arm position sensing

Reed switches in hydraulic arm end position sensing Bulldozers, earth movers, tractors, fork lifts and garbage compactor trucks use hydraulics to move...Continue reading ->

Reed sensors in Contact protection Circuits

Reed switches in inrush current protection Reed switch applications require contact protection when used with loads having in-rush current. Reed...Continue reading ->

Magnet sensors in Satellite dish position sensing in the DTH industry

satellite dish While tuning satellite dishes to various providers, the motor is turned until a clear...Continue reading ->
MS-228 Threaded Magnet Sensor
MS-228 Cylindrical Magnet Sensors: 60W, M8 threaded, omnipolar, complete data sheet and technical specifications.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: MS-228
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