Yl105 Datasheet Better

For a better experience, treat the YL-105 as a , not a precise moisture meter.

Once you turn on the main unit, the green LED lights for of warm‑up. This gives you time to leave the protected area without triggering the alarm. After the green light turns off, any human movement within the detection zone triggers the red LED and, after a 5‑second delay , the 105 dB siren sounds for 45‑50 seconds (some versions: 30 seconds). After the siren stops, the unit automatically re‑arms itself. You can turn off the alarm at any time with the remote control; an intruder cannot silence the alarm. yl105 datasheet better

Serial.print("Moisture analog: "); Serial.println(moisture); Serial.print("Digital wet status: "); Serial.println(wetDetected == LOW ? "WET" : "DRY"); For a better experience, treat the YL-105 as

If you are working with the popular nRF24L01 2.4GHz wireless transceiver, you have likely encountered power instability issues. While the nRF24L01 chip is efficient, it requires a strict 3.3V power supply and is notorious for needing stable current, often failing when powered directly from a 5V microcontroller's 3.3V pin. After the green light turns off, any human

2x4 female socket header (for target RF module insertion) alongside an 8-pin single-row male terminal header for microcontrollers. The Two Engineering Problems the YL-105 Resolves

The datasheet notes the sensor is rated IP68, and the housing uses stainless steel components, but the electrolyte and membrane head are optimized for freshwater chlorination monitoring. For marine applications, consult L-com's technical support regarding compatibility.

VCC → IR LED (with current limiting resistor) → GND VCC → Phototransistor collector → Resistor divider → LM393 inverting input Potentiometer → LM393 non-inverting input (reference voltage) LM393 output → DO pin & output LED