Yl-105 Datasheet -

| Pin Name | Description | |----------|-------------| | | Power supply (3.5V – 5.5V) | | GND | Ground | | DO | Digital Output (TTL: HIGH when no field, LOW when field detected – adjustable) | | AO | Analog Output (direct output from the 49E Hall sensor, voltage varies with magnetic flux density) |

Here is everything you need to know, pulled from the technical specifications of its underlying components. yl-105 datasheet

This standalone security device is a wireless PIR (Passive Infrared) motion detector typically used for home or garage security. Passive Infrared (PIR) Operating Voltage: 6V DC (powered by 4 x AA batteries) Detection Range: Approximately 5 to 8 meters Detection Angle: 110 degrees Alarm Volume: ~105 dB (High-decibel siren) | Pin Name | Description | |----------|-------------| |

The socket allows the radio module to plug in directly, while the bottom pins connect to your microcontroller (e.g., Instructables Potential Alternative Meaning After full recovery (shrinking), the ID will reduce

: For a "3/4" tubing, the supplied internal diameter (ID) is 0.75 inches. After full recovery (shrinking), the ID will reduce based on the ratio (e.g., to 0.375" for 2:1 or 0.25" for 3:1).