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    Inductive Proximity Sensor, Ring Type, 21mm, M12

    $135.77
    Competitive price ring type proximity sensor with 12mm diameter, direct lead wire/ M12 connector two lead wire types can be chosen, 10-36V operating voiltage. The ring inductive proximity sensor uses ABS plastic shell material, has a high response frequency of 500Hz, and an operating environment temperature range of -20 to 80℃, which is suitable for various industrial environments.
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    SKU: ATO-RTPS-T21
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Inductive proximity sensor with 12mm diameter, NPN/ PNP/ 2 wire three output types, manufacturer direct sale. It is generally used to detect small objects, such as blanking detection, small steel balls, small springs, small rivets, metal wire breakage, wire breakage detection.

    Features

    • The ring inductive proximity sensor provides a variety of sensing options to meet the needs of various industrial applications.
    • It supports cable connection or micro quick disconnect connectors, which is flexible in installation and easy to maintain.
    • Some models of inductive ring sensors have adjustable sensitivity.
    • The sensor supports reverse polarity, short circuit and overload protection to ensure safe and stable system operation.

    Specification

    Model ATO-RTPS-41700 ATO-RTPS-41750
    Lead wire types Direct lead wire M12 connector
    Mounting Embedded
    Output methods DC24V NPN NO
    NC
    NO+NC
    PNP NO
    NC
    NO+NC
    2 wire NO
    NC
    AC110V 2 wire NO
    NC
    AC230V 2 wire NO
    NC
    Operating voltage DC24V 10-36V
    AC110V/ AC230V AC90-250V
    Output current DC24V 100mA (2 wire), 200mA(3/4 wire)
    AC110V 500mA
    AC230V DC 100mA/ AC 300mA
    Ring Diameter 21mm
    Response frequency 500Hz
    Environment temperature -20~80℃
    Insulation resistance >20MΩ
    Repeated accurancy ≤5%
    Leak current ≤0.4mA(DC 2wire), ≤1.6mA(AC), ≤0.05mA (DC 3/4 wire)
    Shell material ABS
    Protection grade IP67
    Weight 1kg
    Certificates CE, RoHS
    Warranty 12 months


    Dimension: (mm)

    Dimension of 21mm ring type proximity sensor of direct lead wire Dimension of 21mm ring type proximity sensor of M12

    Wiring diagram

    Wiring diagram of ring typr proximity sensorWiring diagram of ring typr proximity sensorWiring diagram of ring typr proximity sensorWiring diagram of ring type proximity sensor

    Tips: Application scenarios of ring inductive proximity sensors

    The ring-type inductive proximity sensor is ideal for use in automated assembly lines, metal processing workshops, and material conveying systems. It detects metal objects—such as screws, nuts, steel balls, or rods—that pass through its central opening, enabling high-speed, non-contact counting or triggering. Compared to traditional photoelectric switches or mechanical limit switches, it offers greater precision and durability, especially in high-frequency and continuous-motion environments.

    In practical applications, this sensor is often integrated with PLC controllers, pneumatic cylinders, and industrial conveyor systems to enable automated loading/unloading, part counting, or position feedback. For example, when a screw drops through the sensor’s detection zone via a feeder track, it instantly sends a signal to actuate a solenoid valve or transmit data to an HMI touchscreen, supporting fully automated and intelligent process control.

    In this video, ATO will show you the  differences between inductive and magnetic types.

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