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        • Lifecycle status

          Active / Available from OEM
          Apter Power matches HTB18L-N4A5BB range, NPN logic and M12 connection, then checks OEM availability for quotation.

        HTB18L-N4A5BB

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        SICK HTB18L-N4A5BB is an H18 Sure Sense laser proximity sensor with background suppression for detecting small objects.
        In Stock
        Ships by Wednesday, October 28
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
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        Technical specifications for HTB18L-N4A5BB

        • Manufacturer:
          SICK
        • Part Number:
          HTB18L-N4A5BB
        • Product Family:
          SICK
        • Product Type:
          H18 Sure Sense Laser Photoelectric Proximity Sensor
        • Stock:
          1
        • Sensing Principle:
          Photoelectric proximity sensor with background suppression
        • Sensing Range:
          30-250 mm; 300 mm maximum on 90% remission target
        • Light Source:
          Visible red laser, Class 1
        • Output:
          NPN complementary
        • Connection:
          M12, 4-pin
        • Protection:
          IP67 and IP69K
        • Weight:
          0.018 kg
        • Estimated shipping dimensions:
          1.62 x 4.85 x 3.18 cm
        • Tariff Code:
          Please confirm the destination before shipping
        • Country of origin:
          Germany
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Detection Method Output Logic Setup Control Applications

        Features:

        • Small-target focus: The laser spot provides a precise detection point for compact parts and narrow features.
        • Background suppression: The sensor can separate the intended object from machine surfaces behind it when correctly adjusted.
        • Dual logic availability: Complementary outputs let a compatible controller use the switching behavior that best fits the machine sequence.
        HTB18L-N4A5BB detects an object from reflected light while evaluating distance so the background is not accepted as the target.

        The visible laser spot and signal-strength indication make alignment and margin checks easier at a real machine.

        Selection must still match NPN input logic, connector wiring, target remission, distance and the environmental sealing of the installation.

        Apter Power can help confirm the SICK HTB18L-N4A5BB H18 Sure Sense Laser Photoelectric Proximity Sensor, target distance and control-input logic before quotation.
        SICK HTB18L-N4A5BB H18 Sure Sense Laser Photoelectric Proximity Sensor Manuals,Datasheets,Link
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Distance-based decision: Background suppression evaluates the target position instead of accepting every reflected surface.
        • Focused aiming: The laser spot helps align the active area with small parts or fine machine features.
        • Remission awareness: Dark targets reduce usable range, so setup must include the least reflective production item.
        • Margin indication: The signal-strength light bar helps reveal marginal alignment before intermittent misses reach the PLC.
        • NPN interface: The control input must be electrically compatible with a sinking sensor output.
        • Complementary states: Light- and dark-switching information is available so the machine can use the required logic convention.
        • Fault interpretation: A missing transition should be checked at the indicator and output wiring before the sensor is replaced.
        • Recorded polarity: Capturing the original conductor map prevents a correct sensor from appearing faulty after rewiring.
        • Representative targets: Adjustment should use the smallest and darkest expected parts, not only an easy white sample.
        • Real background: The final setting must be proven with the actual machine surface behind the detection point.
        • Mechanical stability: Secure M18 mounting prevents vibration from moving the narrow laser spot off the target.
        • Environmental closure: The stated enclosure protection depends on a correctly fitted connector and intact cable seal.
        • Small-part presence: Detects compact components on assembly and transfer equipment.
        • Edge and feature sensing: Aims at narrow tabs, carriers or package details that need a concentrated spot.
        • Conveyor verification: Confirms product passage while ignoring a fixed surface behind the lane.
        • Machine-position checks: Provides non-contact state feedback where mounting distance and target contrast are controlled.
        Description
        HTB18L-N4A5BB is a compact laser photoelectric proximity sensor for detecting small objects while suppressing reflections from the background. Its focused visible spot helps users place the sensing point precisely where conventional diffuse sensing may struggle with a small target or nearby machine structure.

        The NPN complementary outputs on HTB18L-N4A5BB provide both light- and dark-switching information for a compatible control input. Potentiometer adjustment and the signal-strength light bar support practical setup, while the rugged enclosure suits exposed machine positions when the connector and mounting are correctly sealed.
        Alternative Names
        HTB18LN4A5BB 1074782
        Technical notes
        Confirm the control input expects NPN complementary outputs and provide the documented DC supply before installing HTB18L-N4A5BB. Align the laser spot on the smallest intended target, then set background suppression with representative product and background present. Protect the M12 connection, verify the required switching response and never intentionally view the beam.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        HTB18L-N4A5BB detects a white setup piece but misses the dark production part. What should be changed first?
        Repeat the adjustment with the darkest real target at the farthest required position and watch the signal-strength margin. If reliable separation from the background cannot be achieved, change the sensing geometry rather than increasing sensitivity blindly.
        The indicator on HTB18L-N4A5BB changes, but the PLC input does not. Does the sensor need replacement?
        Not yet. Verify that the PLC input is compatible with NPN logic, then check connector pinout, common reference and the selected complementary output. The optical channel may be working while the electrical interface is wrong.
        A shiny machine panel behind HTB18L-N4A5BB causes false detection after cleaning. How should maintenance respond?
        Re-establish background suppression with the clean panel and representative targets in place, then check the mounting angle. A small geometry change can keep a strong specular reflection away from the receiver.
        Can HTB18L-N4A5BB be aimed at any small object within its maximum distance?
        No. Usable range depends on target remission, size, alignment and the real background. Prove the least reflective target with production tolerances before approving the location.
        The machine vibrates and HTB18L-N4A5BB produces intermittent edges. Which evidence separates alignment loss from wiring noise?
        Observe the signal-strength indication while holding the target stationary, then compare it with the PLC input and cable movement. Optical margin changes point to mounting; stable optics with electrical transitions point to wiring or input reference.
        A replacement marked 1074782 is offered for HTB18L-N4A5BB. What should receiving verify?
        Match both identifiers, the NPN complementary output, M12 connection and background-suppression function on the label or official data. The part number is useful evidence, but the complete configuration still needs confirmation.

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