how does a proximity sensor work

Bestseller No. 1
InduSKY 2pcs 8mm Inductive Proximity Sensor Detecting Distance Approach Sensor Cylinder Proximity Switch NPN NO DC 6-36V 300mA 3-Wire
  • 【High Quality】: Brass nickel-plated shell, not easy to rust and fade. With 115CM high-quality copper wire, strong and durable, and excellent electrical conductivity.
  • 【Sensitive Detection】: ABS material detection surface, the built-in intelligent sensing chip of the proximity switch can sensitively detect objects, when proximity switch is close to single target object, it will send control signal.
  • 【Strong anti-interference】:TVS tube protection, strong anti-interference ability. Non-contact output, and long service life.
  • 【Theory】: Output Type: NPN NO(Normal Open); Diameter of Head : 18mm;Detecting Distance: 8mm; Supply Voltage: DC 6-36V; Current Output : 200-300mA; Detect Object : Metal.
  • 【Application】: It is a component widely used in automatic control industry for detecting, controlling, and contactless switching. It is Widely used in mechanical automation, 3D printing limit positioning, paper making, light industry for limiting station, orientation taking count, speeding trial etc.
SaleBestseller No. 2
URBEST 8mm Detecting Distance Approach Sensor Inductive Proximity Switch NPN NO DC 6-36V Cylinder Type
  • Item Name : Inductive Proximity Switch; Model : LJ18A3-8-Z/BX; Package Qty: 1 Piece Switch
  • Wire Type : DC 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type; Material : Plastic, Alloy;
  • Theory : Inductive Sensor; Output Type: NPN NO(Normal Open);Diameter of Head : 18mm;Detecting Distance : 8mm
  • Supply Voltage : DC 6-36V;Current Output : 300mA;Detect Object : Iron;
  • Operating Temperature : -25C to +55C (Non-freezing Condition);Size : 7 x 3cm/2.8'' x 1.2'' (L*Max. Dia);Cable Length : 103cm / 40.55"
Bestseller No. 3
Taiss 1pcs LJC18A3-H-Z/BX 1-10mm Sensor Switch Capacitance Proximity Sensor Switch NPN NO(Normally Open) DC 6-36V 300mA M18 3-Wire
  • Special attention: There are two friends recently. The reaction product does not work, First note: our products are 100 % tested before they leave the factory. Solution: 1. Turn Switch control sensing distance behind the product; 2 .Send us an email and we will send you a new one.Product Name : Capacitive Proximity Switch; Model : LJC18A3-H-Z/BX;
  • Wire Type : DC 3 Wire Type (Brown, Black, Blue);Theory : Capacitance Sensor; Output Type : NPN NO(Normal Open);Diameter of Head : 16mm; Thread Diameter:18mm; Detecting Distance : 1-10mm
  • Detecting Object : Metal or Nonmetal Material; Supply Voltage : DC 6-36V;Current Output : 300mA;Response Frequency : 100Hz
  • Operating Temperature : -25 to +65 Celsius (Non-freezing Condition);Size : 7.5 x 3cm / 3"x 1.2"(L*Max. Dia);Cable Length : 120cm/47";External Material : Plastic, Alloy
  • Net Weight : 85g;Color : Silver Tone, blue, Gray; Package Content : 1 x Capacitive Proximity Switch
Bestseller No. 4
Twidec /M18 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 8mm Detecting Distance LJ18A3-8-Z/BY
  • Product Name:Inductive Proximity Switch; Wire Type : DC 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type
  • Supply Voltage : DC 6-36V;Current Output : 300mA;Detect Object : Iron
  • Model: LJ18A3-8-Z/BY;Theory : Inductive Sensor;Output Type: PNP NO;Diameter of Column Sensor: 18mm;Detecting Distance : 8mm
  • Total Size: 6.2 x 2cm/2.4'' x 0.8'' (L*Max. Dia); Cable Length: 1.2m/47'';Net Weight :44g
  • External Material : Plastic, Alloy;Package Content : 1 x Inductive Proximity Switch
Bestseller No. 5
Twidec /M8 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 2mm Detecting Distance LJ8A3-2-Z/BY
  • Product Name:Inductive Proximity Switch; Wire Type : DC 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type
  • Supply Voltage : DC 6-36V;Current Output : 300mA;Detect Object : Iron
  • Model: LJ8A3-2-Z/BY;Theory : Inductive Sensor;Output Type: PNP NO;Diameter of Column Sensor: 8mm;Detecting Distance : 2mm
  • Total Size: 5 x 1.5cm/2'' x 0.6'' (L*W); Cable Length: 1.2m/47'';Net Weight : 25g
  • External Material : Plastic, Alloy;Package Content : 1 x Inductive Proximity Switch
Bestseller No. 6
Taiss 2PCS M12 4mm Sensing DC 5V NPN NO(Normally Open) 3D Printer LJ12A3-4-Z/BX-5V Cylinder inductive Proximity Sensor Switch Work Voltage 5VDC Special for MCU
  • Product Name : Inductive Proximity Switch;Model : LJ12A3-4-Z-BX 5V ;Wire Type : 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type
  • Theory : Inductive Sensor;Output Type : NPN NO(Normal Open);Thread Diameter : 10.5mm/0.41";Head Diameter : 11.8mm/0.46"
  • Detecting Distance : 4mm;Supply Voltage : DC 5V;Current Output : 300mA;Response Frequency : 150Hz
  • Detect Object : Iron;Operating Temperature : -25°C to +55°C (Non-freezing Condition);Size : 6.2 x 2cm/2.4'' x 0.8'' (L*Max. Dia);Cable Length : 110cm/43.3"
  • External Material : Plastic, Alloy;Net Weight : 44g;Color : Silver Tone, Yellow, Gray;Package Content : 2 x Inductive Proximity Switch
Bestseller No. 7
Taiss/30 cm Adjustable M18 Diffuse photoelectric Switch Sensor Optical Three Lines NPN NO (Normally Open) Proximity Switch 6-36VDC E3F-DS30C4
  • Special note: if the product you received is damaged or has other problems, please send us an email in time, and we will replace it for you free of charge and patiently solve your problems
  • Product Name : Photoelectric Switch;Sending Light : Infrared Rays;Model : E3F-DS30C4;Detection Way : Diffuse Type Inductive type: diffuse reflection; Induction distance: 30cm adjustable;
  • Output Form : 3 Wires;Voltage : DC 6-36V;Output State : NPN NO
  • Body Size : 2.3x 6.9cm/0.9" x 2.7'' (Max.D*L); Thread diameter: 18mm; Material : Plastic, Alloy;Color : Black, Orange
  • Cable Length : 1.2m / 47'';Weight : 57g;Package Content : 1 x Photoelectric Switch
Bestseller No. 8
Ximimark LJ18A3-8-Z/BX 8mm Approach Sensor Inductive Proximity NPN NO Switch DC 6-36V Cylinder Type
  • It is a component widely used in automatic control industry for detecting, controlling, and contactless switching.
  • It is widely used in machine, paper making, light industry for limiting station, orientation taking count, speeding trial ect.
  • Detecting Distance: 8mm. Diameter of Head: 18mm.
  • Supply Voltage: DC 6-36V. Current Output: 300mA. Detect Object: Iron.
  • When proximity switch is close to single target object, it will send control signal.
Bestseller No. 9
BOJACK LJ12A3-4-Z/BX NPN NO Inductive Proximity Sensor 4mm Detecting Distance DC 6-36V M12 Approach Switch
  • Product Name: Inductive Proximity Sensor
  • Model: LJ12A3-4-Z/BX
  • Voltage: DC 6-36 V
  • Current Output: 200 mA
  • Package: 1 Pcs
Bestseller No. 10
SMAKN Dc 3-wire 6-36v 300ma 2mm PNP No Approach Sensor Proximity Switch LJ8A3-2-Z/BY
  • Product Name : Inductive Proximity Switch;Model : LJ8A3-2-Z/BY ;Theory : Inductive Sensor;Wire Type : DC 3 Wire Type (Black, Brown, Blue)
  • Switch Appearance Type : Cylinder Type, Metal Shell;Output Type : PNP NO(Normal Open);Diameter of Column Sensor : 8mm;Detecting Distance : 2mm
  • Supply Voltage : DC 6-36V;Current Output : 300mA;Response Frequency : 0.5kHz;Detect Object : Iron
  • Total Size : 5 x 1.5cm/2'' x 0.6'' (L*W);Cable Length : 1.2m/47'';External Material : Plastic, Metal
  • Net Weight : 26g;Color : Silver Tone, Blue, Gray;Package Content : 1 x Inductive Proximity Switch

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