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m12 inductive proximity switch npn no dc 6-36v with 4mm detection range lj12a3-4-z/bx by twidec logo

M12 Inductive Proximity Switch NPN NO DC 6-36V With 4Mm Detection Range LJ12A3-4-Z/BX By Twidec Review

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Revainrating 2 out of 5  
Rating 
2.2
🎛️ Sensors, 💡 Industrial Electrical

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Description of M12 Inductive Proximity Switch NPN NO DC 6-36V With 4Mm Detection Range LJ12A3-4-Z/BX By Twidec

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: LJ12A3-4-Z/BX;Theory : Inductive Sensor;Output Type: NPN NO;Diameter of Column Sensor: 12mm;Detecting Distance : 4mm. 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

Reviews

Global ratings 3
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  • 3
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Type of review

Revainrating 1 out of 5

Voltage doesn't drop to zero

Bought two of these for a cnc project to use as a homing limit switch which it didn't work. It is NPN because the signal line does connect to the negative wire and it is NO because it switches when metal approaches it but the voltage doesn't drop to 0.it just stays at 5v which is the voltage I have running it. I have tried it at higher voltages and I get the same results. Same results for both sensors purchased.not happy.

Pros
  • Proximity Sensors
Cons
  • The switch may be prone to wear and tear over time, particularly in rugged environments, which could lead to premature failure or replacement needs

Revainrating 1 out of 5

Did not work - my new review

I purchased this inductive sensor to control the feeding of rifle cases in my annealer. It’s rated 6-36v DC. The power supply and the motor it controls is 12v. The problem is the output from the sensor was @ 4v and instead of dropping to zero once the sensor was activated (which is what you’d expect in a normally closed sensor), it increased the voltage to 6v! Either way, it’s not going to work in a 12v system. So, back it goes and we’ll try a different brand.

Pros
  • Product Name：Inductive Proximity Switch; Wire Type : DC 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type
Cons
  • The M12 Inductive Proximity Switch is a single-purpose tool with few alternative uses, making it a limited investment for users looking to diversify their tool set

Revainrating 5 out of 5

Using this sensor with a Monoprice Select V2

I purchased this inductive sensor as a bed leveling sensor for my Monoprice Select V2. After upgrading the Marlin firmware and making a few changes in the Configuration.h tab I got the sensor to work. I connected the sensor to an Arduino Uno powered with a 9v battery. The sensor is being powered with the input voltage (9v) which gives the sensor enough of a sensing distance that the sensor could be places slightly higher than the hotend nozzle (.12mm). This setup supplied enough voltage to the…

Pros
  • Industrial & Scientific
Cons
  • The product lacks versatility, as it is primarily designed for use in industrial settings and may not be suitable for other non-industrial, niche applications