Must-Have Inductive Proximity Sensor Switch 5V DC NPN Normally Open LJ12A3-4-Z-BX Cylinder, 3-Wire Black Brown Blue, 0.41 Inch Head, 10.5mm Thread, Plug-And-Play For 3D Printers, Microcontrollers, And DIY Projects
✔️ 5V DC, NPN NO, 4mm sensing, 110cm cable, 2-Pack
The LJ12A3-4-Z-BX is a compact cylindrical inductive proximity switch designed to detect ferrous metal objects without contact. This 5V DC sensor is a handy choice for 3D printers, microcontroller projects, and DIY automation setups, offering a reliable NPN normally open output and a short, low-profile footprint.
| 寸法 | メートル法 | インペリアル |
|---|---|---|
| Thread diameter | 10.5 mm | 0.41 in |
| Head diameter | 11.8 mm | 0.46 in |
| Size (L x max dia) | 6.2 cm x 2 cm | 2.44 in x 0.79 in |
| Detecting distance | 4 mm | 0.16 in |
| Cable length | 110 cm | 43.3 in |
Key specs at a glance include a 5V supply, 300 mA output capability, and a 4 mm sensing range. The sensor uses three wires (black, brown, blue) for simple integration with microcontrollers, and ships as a 2-pack for flexible setups in DIY projects.
✅ 5V DC supply, 300 mA max output ✅ NPN normally open (NO) output ✅ Detects ferrous metal at 4 mm distance ✅ 3-wire cable: black (Vcc), brown (Output), blue (GND) ✅ 110 cm cable length for easy mounting ✅ Thread diameter 10.5 mm; head diameter 11.8 mm ✅ Size 6.2 cm x 2 cm; weight 44 g ✅ Pack includes 2 sensors
💡 What is a handy use case for a 5V inductive proximity sensor switch in DIY projects? This handy sensor helps automate metal sensing tasks in compact setups. - 5V DC operation with NPN NO output simplifies wiring to microcontrollers - 4 mm sensing range fits tight spaces in printers and small machines - 110 cm cable length provides flexible mounting options - 2-pack lets you monitor two points or add redundancy