Reed Sensors

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Product family overview

Reed Sensors application and selection guide

Reed sensors and magnetic switches detect position, level or movement through a magnetically actuated contact; operate/release distance depends on magnet, orientation, sensitivity and installation geometry.

Use this family when a sealed non-contact or magnetically actuated sensing point is required. Final magnet distance, cable length and environmental rating should be confirmed for each installation.

Fluid level detectionDoor / position sensingIndustrial equipment interlockVehicle and machinery monitoring

Reed Sensor and Magnetic Switch principle illustration

1Magnet / float / target

2Reed sensor capsule

3Signal cable / connector

4PLC / controller input

Main parameters

Key selection parameters

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model
Environment: Confirm temperature, media and sealing requirements by RFQ

Engineering selection notes

Before choosing a model

These notes keep product pages useful for engineers while avoiding overclaims. Final ratings remain model- and application-specific.

Pull-in and drop-out are differentActuation distance depends on magnet strength, approach direction, sensor sensitivity, housing, nearby metal and installation geometry. Allow for hysteresis between operate and release points.

The whole assembly sets the environment ratingThe reed capsule may be sealed, but IP rating, cable seal, housing material, potting and connector selection determine fluid, temperature and outdoor suitability.

Check load protectionPassive reed sensors draw no steady-state power, but switching voltage/current/wattage limits still apply. Inductive and capacitive loads may need suppression or interface circuitry.

Series comparison

Reed sensor application comparison

Choose the sensor style from the target, medium and installation environment, then confirm cable, connector and actuation distance by RFQ.

Sensor use case	Typical construction	Signal output	Selection focus
Position / proximity	Molded reed sensor with external magnet	NO / NC reed switch output	Actuation distance, magnet type and mounting gap
Level / float sensing	Float or level sensor body	Level state switching	Media compatibility, temperature and mounting thread
Door / interlock	Compact magnetic switch	Controller / PLC input	Cable length, housing strength and environment
Custom OEM sensing	Sensor capsule, lead wire or connector options	Model-specific output	Sealing, connector, cable and production volume

Model display

Representative models in this family

Each model links to its own detail page and datasheet/RFQ path. Use the All Models index for the complete list.

MS06-1A112W820pcs MS06-1A112W Reed Sensor Proximity Switch include delivery cost

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

ADBLUE-LEVEL-SENSORADBLUE-LEVEL-SENSOR

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

AUTOMOTIVE-LEVEL-SENSORAUTOMOTIVE-LEVEL-SENSOR

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

CLS-CAPACITIVE-SENSORCLS-CAPACITIVE-SENSOR

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

FUEL-LEVEL-SENSORFUEL-LEVEL-SENSOR

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

HORIZONTAL-LEVEL-SENSOR-STAINLESS-STEELHORIZONTAL-LEVEL-SENSOR-STAINLESS-STEEL

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

HORIZONTAL-MOUNT-LEVEL-SENSORHORIZONTAL-MOUNT-LEVEL-SENSOR

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

HTS50-12-FAST-HV-SEMICONDUCTOR-SWITCHHTS50-12-FAST-HV-SEMICONDUCTOR-SWITCH

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

JUNO-REED-RELAY-MRS-3E2AJUNO-REED-RELAY-MRS-3E2A

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

LEVEL-SENSOR-ALLLEVEL-SENSOR-ALL

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

LEVEL-SENSOR-PICTURELEVEL-SENSOR-PICTURE

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

LEVEL-SENSOR-VERTICAL-MOUNTLEVEL-SENSOR-VERTICAL-MOUNT

Sensing mode: Magnetic proximity, level, float or position sensing
Output: Normally open/closed or model-specific output
Housing: Plastic, metal or molded sensor body depending on series
Cable / connector: Lead wire and connector options by model

Details · Datasheet

View complete model index

FAQ

Reed Sensors selection FAQ

Answers are shown on-page to match the structured FAQ data and help engineers prepare datasheet review or RFQ requests.

How do I choose a Reed Sensors model?

Start from the application requirement, then compare Sensing mode, Output, Housing, Cable / connector, Environment. Open the model detail page and PDF datasheet before confirming the final ordering code.

Where can I find individual datasheets for this product family?

Each representative model card links to its own detail page and PDF datasheet. For production projects, submit an RFQ so voltage, current, mounting and compliance requirements can be confirmed.

What information should be included in an RFQ?

Include working voltage, current, load type, contact or output form, coil or control voltage, mounting style, environment, validation quantity and expected production volume.

Recommended next steps

Continue product selection

Use these internal paths to move from overview to model comparison, datasheet review and RFQ submission.

Download category catalogSave the family PDF for engineering review Request engineering quoteSend application data for model selection and pricing View complete model indexSearch all public relay, contactor and sensor models Read technical libraryReview application notes and selection guidance Reed SensorCompare related product family options Complete catalog PDFDownload the full public product catalog

Engineering selection guide

Reed sensor and float switch selection details

Define sensing products by housing style, actuation distance, magnet/float geometry, contact behavior, cable/connector, material compatibility and installation direction.

Download selection catalog PDF Download family datasheet PDF Request engineering RFQ

Reed sensor and float switch selection details product reference image — Representative product image; exact package and marking vary by model.

Reed sensor and float switch selection details dimension envelope illustration — Dimension envelope illustration; use the final drawing before PCB/tooling release.

Selection checklist

Sensing mode: proximity, door, level or flow
Housing material and mounting style
Normally-open / normally-closed behavior
Magnet, gap, float and target geometry
Cable length, connector and sealing requirement
Media compatibility and operating temperature

Representative models

MRS01 PDF MRS02 PDF MRS04 PDF MRS06 PDF MRS09 PDF MRS12 PDF MRS19 PDF MLS01 PDF MLS02 PDF

Use these models as starting points when comparing voltage, current, contact form, package and application duty.

Model code example: MRS06-A-Cable

MRS: Magnetic reed sensor family
06: Mechanical package / housing series
A/B: Contact behavior or sensitivity option
Cable/connector: Lead length and connector by customer drawing

English engineering resources

Reed Sensors English catalog

Review the standardized English product-family catalog, datasheets and RFQ path for this product category.

Download Category Catalog Complete Product Catalog Request Engineering Quote

Original source PDFs are preferred when available. Generated English PDFs are used only when no original source PDF is found; final ratings, drawings and application suitability are confirmed by RFQ.

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