Product Description

shielded M18 PNP and npn sensor Our mission is to provide all customers with qualified products and good service. We appreciate the opportunity to convince you of our quality, competence and potential. Our company has a wide variety of products to choose from, including many custom made. Adhere to the stability of product quality and adhere to the strict requirements of product manufacturing.We look forward to working with you in the future!

Product Detail

1. Product Introduction

shielded M18 PNP and npn sensor Proximity switches are also called proximity sensors. The sensor is divided into inductive, capacitive, analog, Hall, and magnetic. The sensor can be used with PLC programmable controllers, single-chip microcomputers, non-gate circuits, electronic counters, solid state relays, small relays and other products.

Installation requirements:
The unshielded proximity switch can obtain the maximum operating distance (related to the diameter); but in order to prevent the metal around the switch from affecting the switch, the switch sensing head must maintain a certain gap with the surrounding metal.
shielded M18 PNP and npn sensor Due to the special internal shielding effect of the shielded proximity switch, the radial magnetic field on the side is reduced, and the sensing distance is about 60% of that of the unshielded type, so it can be installed flush in the metal.

2.Product Parameter (Specification)

Product model:


Model classification:





DC Type 2Wire NO

DC Type 2Wire NC

AC Type 2Wire NO

AC Type 2Wire NC

Regular line length:


Detection distance:


Setting distance:


Standard detection object:

iron 18*18*1mm

Response frequency:

DC: 0.5kHz    AC: 25Hz

Lag distance:

10% or less of the detection distance

Detection object:

Magnetic metal (detection distance decreases when non-magnetic metal)

Power supply voltage:

DC type: DC12~24V (6~36V) pulsation (P-P) less than 10%; AC type: AC110~220V (36~250V) 50/60Hz

Current consumption:

N.P type: 13mA or less, D type: 0.8mA or less, A type: 1.7mA or less

Control output:

N.P type: below 300mA, D type below 200mA, A type: below 400mA

Circuit protection:

N.P.D type: reverse connection protection, surge absorption, load short circuit protection, A type: surge absorption

Ambient temperature and humidity:

during operation, during storage: -30~+65℃ each;

(No freezing, no condensation), during operation, during storage: 35~95% each

Insulation resistance:

above 50MΩ (DC500 megohmmeter) between the charging part and the shell

Withstand voltage:

AC1000V 50/60Hz 1min between the charging part and the shell

Influence of temperature:

temperature range -30~+65℃, when +23℃, within ±15% detection distance, temperature range -25~+60℃, when +23℃, within ±10% detection distance

The influence of voltage:

within ±15% of the rated power supply voltage range, within ±10% of the detection distance of the rated power supply voltage value

Protection structure:

IP65 (IEC standard)


(Shell: Nickel-plated brass) (Detection surface: ABS)

3.Product features and applications

◆The cylindrical type can be directly replaced with the same varieties at home and abroad;
◆Power reverse connection protection, short circuit protection, can be directly connected with PLC;
◆It is used in ordinary occasions and has medium environmental resistance;
◆The red LED display can detect the working status of the sensor;
◆Economical and simple operation;
◆Wide range of applications, can replace small switches and limit switches;
◆IP65 protection structure (IEC specification);
◆Please read the precautions in the product manual before use.
The use of shielded M18 PNP and npn sensor is generally used to detect or count and sense whether the metal is working normally or stops working; it is suitable for manufacturing factories and automatic auto parts. Proximity switches are widely used in aviation, aerospace technology and industrial production. In daily life, such as hotels, restaurants, automatic doors of garages, automatic hot air blowers are used. In terms of security and anti-theft, such as data files, accounting, finance, museums, vaults and other important places, anti-theft devices composed of various proximity switches are usually installed.In measurement technology, such as length and position measurement; in control technology, such as displacement, velocity, acceleration measurement and control, a large number of proximity switches are also used.

4. Product Details

shielded M18 PNP and npn sensor The inductive proximity switch sensor is composed of high-frequency oscillation, detection, amplification, triggering and output circuits. The oscillator generates an alternating electromagnetic field on the detection surface of the sensor. When a metal object approaches its detection surface, the eddy current generated in the metal absorbs the energy of the oscillator, weakening the oscillation and even stopping the vibration. The two states of oscillation and stop of the oscillator are converted into electrical signals through the shaping amplifier and converted into binary switching signals, which are output after power amplification.
Our products shielded M18 PNP and npn sensor, Our products have high-quality materials, are easy to install, and are durable and suitable for various industrial equipment. Mainly used to detect metal materials. Can be used in a variety of situations. With expertise, expertise and experience, we are striving to do better.

5.Product Qualification

Our shielded M18 PNP and npn sensor products have CE certification, and the quality is guaranteed.

6.Deliver,Shipping And Serving

We have a lot of shielded M18 PNP and npn sensor in stock.We can send the stock products in 3-7 work days. If without stock,or stock is not enough, we will check the delivery time with you.We guarantee to ship the goods within the specified time and choose high-quality logistics services.We will use good packing and ensure the safety.We will be responsible to any product damage caused on delivery.

7. FAQ

Do you have a catalogue? Can you send me the catalogue to have a check of all your products?

Yes , We have product catalogue.Please contact us on line or send an Email to sending the catalogue.

I need your price list of all your products, do you have a price list ?

We do not have a price list of all of our products. Because we have so many items,and it’s impossible to mark all of their price on a list.And the price are always changing because of the producing cost.If you want to check any price of our products, please feel free to contact us.We will send offer to you soon!

I can’t find the product on your catalogue, can you make this product for me?

Our catalogue shows most of our products,but not all.So just let us know what product do you need, and how many do you want.If we do not have it,we can also design and make a new mould to produce it.For your reference,making a ordinary mould will take about 35-45days.

Can you make customized products and customized packing?

Yes.We made a lot of customized products for our customer before. And we made many moulds for our customers alread. About customized packing,we can put your Logo or other info on the packing.There is no problem.Just have to point out that ,it will cause some additional cost.

Can you provide samples ? Are the samples free ?

Yes,we can provide samples.But you have to pay for the shipping cos. If you need many items, or need more qty for each item,we will charge for the samples.

What kind of payment do you accept ? Can I pay RMB ?

We accept T/T(Wire transfer),Western Union and Paypal. Please be sure that we can receive the same amount of the Invoice. And you can pay money In RMB. No problem.

What about your delivery time?

We have a lot of products in stock.We can send the stock products in 3 work days. If without stock,or stock is not enough, we will check the delivery time with you.

How to ship my order ? Is it safe?

For small package, we will send it by Express, such as DHL,FedEx,UPS,TNT,EMS.That’s a Door to Door service.For big packages, we will send them by Air or By sea.We will use good packing and ensure the safety.We will be responsible to any product damage caused on delivery.

Do you have a guarantee of your product quality?

We have a guarantee of one year.

Can I become an Agent / Dealer of LIANGU products?

Welcome! But please let me know your Country/Area fisrt,We will have a check and then talk about this.If you want any other kind of cooperation,do not hesitate to contact us.

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