| Instruction of models and parameters | LJ1840A-8 Series | |
| Model Number（M12 Waterproof Non-buried） | ||
| DC (Direct Current) Type | NPN & 3-wire & normal open | LJ1840A-8/Z2CN2/2 |
| NPN & 3-wire & normal close | LJ1840A-8/Z2DN2/2 | |
| NPN & 4-wire & one open one close | ||
| PNP& 3-wire & normal open | LJ1840A-8/Z2CP2/2 | |
| PNP& 3-wire & normal close | LJ1840A-8/Z2DP2/2 | |
| PNP & 4-wire & one open one close | ||
| 2-wire & normal open | LJ1840A-8/Z0AN2/2 | |
| 2-wire & normal close | LJ1840A-8/Z0BN2/2 | |
| AC (Alternating Current) Type | 2-wire & normal open | |
| 2-wire & normal close | ||
| Detection distance | 8mm±10% | |
| Detection object | Metal | |
| Standard detection object | Iron, 48x48x1mm | |
| Voltage | DC type（NPN，PNP，2-wire）：10-30VDC | |
| AC type：90-250VAC | ||
| Static current | DC type（NPN，PNP，2-wire）：3mA/12V | |
| 5mA/24V， AC type： | ||
| Response frequency | DC type:100Hz，AC type:20Hz | |
| Output current | Resistive load: Max 200mA | |
| Inductive load: Max 100mA | ||
| Circuit protection | DC type Anti-connection, surge absorption | |
| Ambient temperature | Temperature：-25℃--- +75℃（But not freezing） | |
| Residual voltage | DC Type（NPN，PNP）： | |
| AC Type (2-wire）： | ||
| Insulation resistance | >50MΩ | |
| （Shake the meter with DC500V, between the live part and the shell） | ||
| Withstand voltage | AC1500V 50/60Hz，1min | |
| Between the live part and the shell | ||
| Protection level | IP67（IEC specifications） | |
It is widely used in automatic control, quality inspection and safety protection in industries such as bearings, textiles, metallurgy, elevators, and machine tools.
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