JM Series M18/M30 Connector-Type Inductive Proximity Sensors (M12 Quick-Disconnect)

Name: JM Series M18/M30 Connector-Type Inductive Proximity Sensors (M12 Quick-Disconnect)
Brand: DAIDISIKE
SKU: jm-series-m18-m30-connector-type-inductive-proximity-sensors
Availability: InStock

M18/M30 inductive proximity sensors with M12 quick-disconnect wiring for fast installation and field replacement.

JM Series M18/M30 Connector-Type Inductive Proximity Sensors (M12 Quick-Disconnect) - dimensional drawing

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Technical Specifications

Sensing method	Inductive
Thread/body size	M18 or M30
Connector type	3-wire, M12 4-pin quick-disconnect connector
Length options	JM18: 79mm or 50mm; JM30: 78mm or 50mm
Output type	NPN / PNP, NO / NC
Mounting type	Flush; T suffix = non-flush
Sensing distance, JM18 flush	5mm / 8mm / 12mm
Sensing distance, JM18 non-flush	8mm / 16mm / 20mm
Sensing distance, JM30 flush	10mm / 15mm / 22mm
Sensing distance, JM30 non-flush	15mm / 25mm / 40mm
Supply voltage	10-30VDC
Wiring	3-wire DC, M12 4-pin connector
Ingress protection	IP67
Overload current protection point	180mA
Response time	As fast as 0.2ms (shortest-range variants)
Switching frequency	Up to 1KHz (shortest-range variants) down to 100Hz (longest-range variants)
Indicator	Built-in LED status indicator
Short-circuit protection	Built-in

Overview

JM18 and JM30 are inductive proximity sensors that detect the presence of metal targets without physical contact. Each sensor is built into a threaded metal barrel (M18 or M30) for standard panel/bracket mounting and terminates in an M12, 4-pin connector rather than a bare cable, so a mating M12 cable plugs directly into the sensor body.

They are intended for machine builders, panel integrators, and maintenance teams who need a proximity sensor that can be unplugged and swapped without re-terminating wires. The series covers five sensing-distance positions per body size, with NPN/PNP output and NO/NC logic all available, on a 10-30VDC supply with IP67 protection.

Features & Benefits

M12 Quick-Disconnect Wiring

The sensor terminates in an M12, 4-pin connector so the field cable simply plugs in. No stripping, crimping, or re-terminating wires when installing or swapping a sensor.

Two Body Sizes, Five Sensing-Distance Options Each

JM18 offers rated sensing distances of 5/8/12mm (flush) and 8/16/20mm (non-flush); JM30 offers 10/15/22mm (flush) and 15/25/40mm (non-flush), covering short- to long-range detection within one connector-style product line.

NPN/PNP and NO/NC Configurations in One Series

Every sensing-distance variant is available as NPN or PNP output, and as normally-open (NO) or normally-closed (NC), letting the same series match different PLC input card types and logic requirements.

10-30VDC Wide Supply Range

Operates across a standard industrial DC supply range of 10-30VDC, compatible with common 24VDC control cabinets.

IP67 Ingress Protection

Rated IP67, suitable for environments with dust, splashing, or occasional washdown exposure.

Built-in Short-Circuit and Overload Protection

The sensor includes short-circuit protection and an overload current protection point of 180mA, reducing the risk of sensor damage from wiring faults.

LED Status Indication

All variants include a built-in LED for visual on/off status confirmation during commissioning and troubleshooting.

Fast Response for High-Speed Counting/Detection

Response time as fast as 0.2ms and switching frequency up to 1KHz on the shortest-range variants, suitable for higher-speed detection or counting tasks.

Applications

Conveyor and Line-Position Detection — IP67 protection, standard M18/M30 mounting dimensions, and flexible NO/NC output suit common in-position or counting detection on production lines.

Machine Builders Standardizing on Connector-Type Sensors — M12 connector output lets integrators pre-make cable assemblies and simply plug sensors in on the assembly line, shortening wiring labor.

Quick Sensor Replacement Without Re-Wiring — Maintenance staff can swap a failed sensor by unplugging and re-plugging the M12 connector, without stripping wires or powering down to re-terminate.

High-Speed Counting or Pulse Detection — The shortest-range variants respond in as little as 0.2ms with switching frequency up to 1KHz, suitable for faster target-passing detection.

Applications Requiring Different PLC Logic (Sinking/Sourcing, NO/NC) — NPN/PNP and NO/NC combinations are all available within the series, so a single product line can cover multiple control-system requirements.

Long-Range Detection with Non-Flush Mounting — Non-flush (T-suffix) models reach farther than their flush counterparts at the same position, up to 40mm on JM3040, for targets set back from the mounting face.

Washdown-Tolerant or Dusty Industrial Environments — IP67 protection supports typical dust and occasional splash exposure in general industrial settings; it is not intended for high-pressure washdown or continuous immersion.

Models & Ordering Information

JM18 Series, Position Codes 05/08/12/16/20

JM1805N1JM1805P1JM1805N2JM1805P2JM1808N1JM1808P1JM1808N2JM1808P2JM1812N1JM1812P1JM1812N2JM1812P2JM1816N1JM1816P1JM1816N2JM1816P2JM1820N1JM1820P1JM1820N2JM1820P2

Per the parameter table, position codes 05/08/12 correspond to flush-mount sensing distances of 5/8/12mm. Add a length suffix (79 or 50) to complete the full part number, e.g., JM1805N179 (79mm) or JM1805N150 (50mm).

JM18 Non-Flush Mount, T Suffix, Position Codes 08T/16T/20T

JM1808N1TJM1808P1TJM1808N2TJM1808P2TJM1816N1TJM1816P1TJM1816N2TJM1816P2TJM1820N1TJM1820P1TJM1820N2TJM1820P2T

Non-flush mounting, sensing distances 8/16/20mm. Add a length suffix (79 or 50) to complete the full part number, e.g., JM1808N1T79 or JM1808N1T50.

JM30 Series, Position Codes 10/15/22/25/40

JM3010N1JM3010P1JM3010N2JM3010P2JM3015N1JM3015P1JM3015N2JM3015P2JM3022N1JM3022P1JM3022N2JM3022P2JM3025N1JM3025P1JM3025N2JM3025P2JM3040N1JM3040P1JM3040N2JM3040P2

Per the parameter table, position codes 10/15/22 correspond to flush-mount sensing distances of 10/15/22mm. Add a length suffix (78 or 50) to complete the full part number, e.g., JM3010N178 (78mm) or JM3010N150 (50mm).

JM30 Non-Flush Mount, T Suffix, Position Codes 15T/25T/40T

JM3015N1TJM3015P1TJM3015N2TJM3015P2TJM3025N1TJM3025P1TJM3025N2TJM3025P2TJM3040N1TJM3040P1TJM3040N2TJM3040P2T

Non-flush mounting, sensing distances 15/25/40mm. Add a length suffix (78 or 50) to complete the full part number, e.g., JM3040N1T78 or JM3040N1T50.

How to Select

Choose M18 or M30 based on available thread/mounting space and required sensing distance -- M30 supports longer range than M18.
Choose flush or non-flush mounting based on installation clearance: flush mount tolerates surrounding metal but has a shorter rated sensing distance, while non-flush mount needs clearance around the sensing face but reaches farther.
Select the sensing-distance position that matches your detection range: JM18 flush 5/8/12mm, JM18 non-flush 8/16/20mm, JM30 flush 10/15/22mm, JM30 non-flush 15/25/40mm.
Choose NPN (N) for sinking-type PLC input cards, or PNP (P) for sourcing-type input cards.
Choose normally-open (1/NO) for standard on-when-detected logic, or normally-closed (2/NC) for the inverse logic.
Choose the length variant based on installation depth: JM18 offers 79mm or 50mm; JM30 offers 78mm or 50mm.
Confirm the wiring: all variants are 3-wire DC with an M12, 4-pin connector, and require a matching M12 cable (BN=+, BU=-, BK=signal, plus WH on dual-output NO+NC variants).

📘 Need the full method? How to Choose a Proximity Sensor · NPN vs PNP Sensor Outputs Explained

When NOT to specify the JM — and what to use instead

Detecting plastic, wood, liquid, or other non-metallic parts

Why not: This is an inductive sensor built to detect metal targets; no non-metallic detection rating is listed.

Use instead: A capacitive proximity sensor series, which can detect non-metallic and liquid targets.

Application needs more than 40mm sensing distance

Why not: The longest rated sensing distance in this series is 40mm, on the JM30 non-flush variant; JM18 non-flush tops out at 20mm.

Use instead: A photoelectric sensor for longer-range, non-contact detection.

High-speed counting needing more than 1KHz switching

Why not: Switching frequency reaches up to 1KHz only on the shortest sensing-distance variants and falls to 100Hz on the longest-range (e.g. JM3040 non-flush) variants.

Use instead: A shorter-range flush variant such as JM1805 (0.2ms/1KHz), or a photoelectric sensor if higher line speed is required.

Washdown-intensive or wide-temperature-extreme installation

Why not: Only an IP67 rating is published for this series; no operating-temperature range or housing material is stated, unlike other DAIDISIKE inductive lines that publish a -25°C to +70°C range.

Use instead: Confirm ambient-temperature suitability with the factory before specifying, or use the D6.5 or M12 22/35/45mm series, which document a -25°C to +70°C range.

Driving a load requiring more current than the sensor is rated to carry

Why not: This series' spec sheet lists an overload protection trip point of 180mA but does not state a maximum continuous load current figure.

Use instead: Confirm maximum load current with the factory, or interpose a relay for heavier loads.

Machine-guard interlocking or any personnel-safety function

Why not: No functional-safety or safety-rated certification is listed for this series.

Use instead: A dedicated safety-rated interlock switch or safety light curtain for guarding duty.

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

Housing material
Operating temperature range
Maximum continuous load current (only the 180mA overload trip point is stated)
Correction factor for non-ferrous (aluminum/brass/copper) targets versus the rated steel sensing distance
MTBF / expected service life
Weld-field (weld-immune) suitability
Certification documents (stated as available on request, not published)

Frequently Asked Questions

What is the difference between JM18 and JM30 series?

JM18 uses an M18-threaded sensor barrel and JM30 uses an M30-threaded barrel. The larger M30 body generally supports longer sensing distances (up to 40mm non-flush) compared to JM18 (up to 20mm non-flush).

What connector does the JM series use?

The JM series terminates in an M12, 4-pin connector rather than a fixed cable, so it connects via a mating M12 cable rather than direct wire termination.

What is the difference between flush and non-flush mounting?

Flush-mount sensors can be installed with the sensing face level with surrounding metal without affecting detection, but have a shorter rated sensing distance. Non-flush sensors require clearance around the sensing face but achieve a longer rated sensing distance -- for example, JM18 flush is rated up to 12mm while JM18 non-flush is rated up to 20mm.

What is the supply voltage range?

10-30VDC.

What is the ingress protection rating?

IP67.

Does the sensor have short-circuit protection?

Yes. The sensor includes short-circuit protection, with an overload current protection point of 180mA.

What is the maximum switching frequency?

Up to 1KHz on the shortest sensing-distance variants (e.g., JM18 5mm flush); switching frequency decreases as rated sensing distance increases, down to 100Hz on the longest-range variants (e.g., JM30 40mm non-flush).

Does the sensor have an LED indicator?

Yes, all JM series variants include a built-in LED for status indication.

What output types are available -- NPN or PNP, NO or NC?

Both. Each sensing-distance variant is offered in NPN and PNP output, and in normally-open (NO) and normally-closed (NC) configuration.

Are certification documents (e.g., CE, RoHS) available for the JM series?

Certification documents are available on request.

Works Well Together

On the same machine or line, JM is typically ordered together with: Photoelectric Sensors · Relay & Timer Modules · Laser Switch Sensors

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