1、This is a normally close proximity switch sensor with 4mm detection distance. 2、When proximity switch is close to some target object, it will send out control signal.  3、It is a component widely used in automatic control industry for detecting, controlling, and non-contact switching.  4、High sensitivity, quick response, stable performance. 5、Non-contact detection avoids the sensor and the target object from damages. Features: This is a normally close proximity switch sensor with 4mm detection distance. When proximity switch is close to some target object, it will send out control signal. It is a component widely used in automatic control industry for detecting, controlling, and non-contact switching. High sensitivity, quick response, stable performance. Non-contact detection avoids the sensor and the target object from damages. Specification: Model: LJ12A3-4-Z/DX Detection distance: 4mm±10% Setting distance: 0-3.6mm Delay distance: <10% of detection distance Detection object: Magnetic metal(The detection distance decreases when it is non-magnetic metal) Standard detection object: Iron 15*15*1mm Response frequency: 0.5kHz Current consumption: N.P type: <13mA, D type: <0.8mA, A type: <1.7mA Control output: N.P type: <300mA, D type: <200mA, A type: <400mA Loop protection: N.P.D type: reverse connection protection, surge absorption, load short circuit protection, type A: surge absorption Ambient temperature and humidity: -30~65℃, 35-95%RH Temperature influence: Temperature range -30~65℃, at 23℃, ±15% detection distance; Temperature range -25~60℃, at 23℃, ±10% 0detection distance Insulation impedance: >50MΩ Housing material: Nickel plated brass Detection surface: ABS Weight: Approx. 80g/2.8oz Package list: 1 * Inductive Proximity Switch