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M12 Inductive Proximity Sensor with 8mm / 10mm Non-flush Detection and NPN Normally Open (N.O) Output for IP67 Protection

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M12 Inductive Proximity Sensor with 8mm / 10mm Non-flush Detection and NPN Normally Open (N.O) Output for IP67 Protection

Brand Name:	KRONZ
Model Number:	IN8-M12NO68-M0A/D, IN8-M12NO50-M0A/D, IN10-M12NO68-M0A/D, IN10-M12NO50-M0A/D
MOQ:	10 pieces
Price:	Negotiable
Packaging Details:	Paper box packing
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

Guangdong, China

Certification:

Document:

Voltage Drop:

≤2.0V

Operating Current:

200mA

Leakage Current:

≤0.01mA

Indication:

Permanently On: Switching Output Active

Switching Frequency:

500Hz、400Hz

Sensing Range:

8mm（non-flush）/ 10mm（non-flush）

Supply Ability:

100000 pieces per month

Highlight:

8mm / 10mm non-flush detection Inductive Proximity Sensor

NPN Normally Open (N.O) M12 Sensor

IP67 protection NPN Proximity Sensor

Product Description

M12 Inductive Proximity Sensor NPN N.O — 8mm / 10mm Non-flush | KRONZ

M12 Inductive Proximity Sensor -- NPN Normally Open (N.O) Series
8 mm / 10 mm non-flush detection * 10-30 V DC * IP67 * 4-pin M12 connector

Built for Japanese PLCs and current-sinking input modules. When metal enters the detection range, the output pulls down to 0 V -- directly compatible with sink-type inputs on Mitsubishi, Omron and other Japanese PLCs without any level shifter.

Models on this page: IN8-M12NO68-M0A/D, IN8-M12NO50-M0A/D, IN10-M12NO68-M0A/D, IN10-M12NO50-M0A/D

Product Overview

What this series solves

On any production line there are three questions the operator keeps asking: is the part here, has the mechanism reached its end-stop, has the gripper closed? All three reduce to one detection: is a metal object in a specific position. An NPN normally-open proximity sensor gives a direct answer -- no metal = output open, metal present = output closed.

How NPN N.O works

NPN output is also called current sinking. Inside the sensor is an NPN transistor whose emitter is tied to 0 V (L−):

No metal target → transistor off → output pin is high-impedance → no current through the load → PLC input reads "0"
Metal enters the range → transistor on → output pin is pulled to ~0 V, current flows from L+ through the load into the output pin → PLC input reads "1"

The load is wired between L+ (brown, Pin 1) and OUT (black, Pin 4). Current flows into the output pin -- that is the sink behavior.

When to choose NPN N.O

Your situation	Choose it?
PLC input module is sink / common-plus (COM tied to 24 V+)	✅
You use Mitsubishi, Omron, Keyence or similar Japanese PLCs	✅
You want a logic that reads "target arrived = ON"	✅
PLC is source / common-minus	❌ pick PNP N.O
You need fail-safe -- broken wire must trigger an alarm	❌ pick NPN N.C

IN8 vs IN10 -- how to pick between the two distances

IN8 series -- 8 mm detection range, 500 Hz switching -- faster response, ideal for high-speed counting and small-part detection
IN10 series -- 10 mm detection range, 400 Hz switching -- more installation margin when the target vibrates or the mounting surface is uneven

Both share the M12 × 1 mm cylindrical thread and non-flush (unshielded) installation. Same datasheet, same mounting logic -- only the detection range and switching frequency differ.

Key Features

1. NPN current-sinking output, direct to Japanese PLCs
Wire the output straight into the sink input of a Mitsubishi FX/Q, Omron CP/CJ, or Keyence module. No interposing relay, no level shifter. You save the cost of one relay and one wiring failure point.

2. Normally-open logic, easy to read on the floor
No metal → LEDs off, output open. Metal present → 4 × LEDs light and output closes. During commissioning you don't need to check the manual -- just look at the LEDs.

3. Two detection ranges on one page
Choose 8 mm at 500 Hz for high-speed applications, or 10 mm at 400 Hz when the target has more play.

4. Non-flush (unshielded) -- longer range from the same M12 footprint
The unshielded structure lets the magnetic field spread sideways, giving a longer rated range than the flush variant in the same M12 body. The trade-off is that you must keep free metal space around the sensing face.

5. IP67 + −25…70 °C -- survives the shop floor
IP67 per IEC 60529: dust-tight and protected against temporary immersion. Cutting fluid, coolant splash, and metal dust are all in spec. The −25…70 °C operating range covers cold storage to cabinet-side mounting.

6. Nickel-plated brass body + PBT sensing face
The housing is nickel-plated brass for impact and corrosion resistance. The sensing face is blue PBT -- wear-resistant and insensitive to metal swarf. Two hex nuts (17 mm across flats) clamp the sensor and resist long-term vibration loosening.

7. Field-replaceable M12 connector
The 4-pin M12 A-coded male connector (IEC 61076-2-101) is not a fixed cable. If the cable gets damaged, just swap the cordset -- no need to disassemble the sensor or re-wire it.

8. Triple electrical protection -- hard to kill during commissioning
Built-in short-circuit, reverse-polarity and power-up pulse protection. If you accidentally reverse the 24 V supply or short the output to ground, the sensor protects itself and resumes operation once the fault is cleared.

Technical Specifications

Common electrical parameters (all 4 models)

Parameter	Specification	Standard
Output function	NPN, Normally Open (N.O)	IEC 60947-5-2
Output configuration	DC 3-wire	IEC 60947-5-2
Thread / form factor	M12 × 1 mm cylindrical	--
Installation type	Non-flush (unshielded)	IEC 60947-5-2
Operating voltage	10…30 V DC (±10%)	IEC 60947-5-2
Voltage drop	≤ 2.0 V	IEC 60947-5-2
Rated operating current	200 mA	IEC 60947-5-2
Leakage current	≤ 0.01 mA	IEC 60947-5-2
No-load current	≤ 10 mA (at 24 V DC)	IEC 60947-5-2
Switching hysteresis	< 15% of Sr	IEC 60947-5-2
Repeat accuracy	< 1.0% of Sr	IEC 60947-5-2
Electrical protection	Short-circuit / reverse-polarity / power-up pulse	IEC 60947-5-2
Switching-state indication	4 × LEDs, on while output is active	--
Connection	4-pin M12 connector, A-coded	IEC 61076-2-101

Per-model differences (key selection parameters)

Model	Sensing range Sn	Switching freq.	Body length	Thread length	Total length (straight)	90° height
IN8-M12NO68-M0A/D	8 mm (non-flush)	500 Hz	68 mm	42 mm	68 mm	34 mm
IN8-M12NO50-M0A/D	8 mm (non-flush)	500 Hz	50 mm	28 mm	50 mm	20 mm
IN10-M12NO68-M0A/D	10 mm (non-flush)	400 Hz	68 mm	42 mm	68 mm	34 mm
IN10-M12NO50-M0A/D	10 mm (non-flush)	400 Hz	50 mm	28 mm	50 mm	20 mm

Shared across all four: M12 × 1 mm thread, Ø7 mm sensing face, 67 mm barrel length (68-body) or 49 mm (50-body), 17 mm nut across flats.

Mechanical and environmental parameters

Parameter	Specification	Standard
Ambient operating temperature	−25 … +70 °C	IEC 60068-2-14
Ingress protection	IP67 (dust-tight, protected against temporary immersion)	IEC 60529
Housing material	Brass, nickel-plated	--
Sensing face material	PBT (polybutylene terephthalate)	--
Connector thread	M12 × 1 mm male	IEC 61076-2-101
Mounting hardware	Two hex nuts, 17 mm across flats	--

NPN N.O output truth table

Metal target	Output transistor	Output pin level	LEDs	PLC input
Not in range	Off (high-Z)	Pulled up to L+	Off	0
Enters range	On	≈ 0 V	Lit	1

Configuration Details

Model selection

Model	Range	Frequency	Body	Recommended use
IN8-M12NO68-M0A/D	8 mm	500 Hz	68 mm	High-speed counting, small-part detection, standard stations
IN8-M12NO50-M0A/D	8 mm	500 Hz	50 mm	Slim fixtures, tight machine frames
IN10-M12NO68-M0A/D	10 mm	400 Hz	68 mm	Targets that vibrate or have wide position tolerance
IN10-M12NO50-M0A/D	10 mm	400 Hz	50 mm	Limited space but 10 mm range required

Pin assignment -- 4-pin M12 A-coded

Pin	Wire colour (typical)	Signal	Description
1	Brown	L+	Supply positive, 10…30 V DC
2	White	N/C	Not connected (reserved)
3	Blue	L−	Supply 0 V (GND)
4	Black	OUT	NPN Normally Open (N.O) switching output

The factory datasheet does not include a wiring diagram. The table above follows the M12 4-pin A-coded convention (IEC 61076-2-101). Verify against the wiring label packed with the sensor before commissioning.

Wiring diagram -- NPN N.O

Key point: The load sits between L+ and OUT. When the sensor closes, it sinks the output pin to 0 V, completing the current path. This is the source-and-sink (sink) wiring.

Dimensions (mm)

Dimension	68 mm body	50 mm body
Total length (straight M12 connector)	68	50
Barrel length (to connector shoulder)	67	49
Threaded section length	42	28
Sensing face diameter	Ø7	Ø7
90° right-angle connector height	34	20
Mounting thread	M12 × 1 mm	M12 × 1 mm
Nut across flats	17	17

Mounting requirements (non-flush)

Free metal space around the sensing face. Non-flush (unshielded) sensors let the magnetic field expand sideways. Without sufficient clearance, the effective detection range collapses. Recommended free space ≥ 3 × Sn (≈ 24 mm for the 8 mm body, ≈ 30 mm for the 10 mm body). When mounting two sensors side by side, also keep enough spacing to prevent mutual interference.
If you must flush-mount. This series is unshielded. If the installation cannot provide side clearance, switch to a flush (shielded) variant instead.
Tightening torque. Clamp with the two hex nuts. Do not over-tighten -- suggested maximum is 15 N*m to avoid housing deformation.
Temperature drift. Datasheet repeat accuracy is < 1.0% Sr and hysteresis < 15% Sr. Allow margin for tight-positioning applications where temperature varies across the −25…70 °C range.

Typical applications

Industry	Use case
Industrial automation	Part-presence detection on conveyors, station confirmation on assembly lines
Packaging machinery	Carton and foil position verification, flap-in-place check
Material handling	Pallet, tote and shuttle positioning
Machine tools	End-stop detection, tool-changer position feedback
Robotics	Gripper open/close confirmation, axis end-position homing

Related variants in the same M12 series

Output function	Description
NPN Normally Closed (N.C)	Output closed when no target -- for fail-safe circuits and wire-break detection
PNP Normally Open (N.O)	Current-sourcing output, fits Siemens and other European PLCs
PNP Normally Closed (N.C)	Sourcing + fail-safe

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products details

M12 Inductive Proximity Sensor with 8mm / 10mm Non-flush Detection and NPN Normally Open (N.O) Output for IP67 Protection

M8 Connectors

M12 Connectors

RJ45 Connectors

7/8'' Connectors

Industrial Ethernet Switches

Ultrasonic Sensors

Inductive Sensors

Industrial Power Supplies

RFID System

I/O Module

Distribution Box

Distributor Connector

Photoelectric Sensors

M8 Connectors

M12 Connectors

RJ45 Connectors

7/8'' Connectors

Industrial Ethernet Switches

Ultrasonic Sensors

Inductive Sensors

Industrial Power Supplies

RFID System

I/O Module

Distribution Box

Distributor Connector

Photoelectric Sensors

M12 Inductive Proximity Sensor with 8mm / 10mm Non-flush Detection and NPN Normally Open (N.O) Output for IP67 Protection

8mm / 10mm non-flush detection Inductive Proximity Sensor

NPN Normally Open (N.O) M12 Sensor

IP67 protection NPN Proximity Sensor