Datasheet Portable | Yl-105

YL-105

The is a commonly used 433MHz Superheterodyne Wireless Receiver Module . It is frequently utilized in low-cost wireless communication projects, such as remote control systems, home automation, and sensor data transmission.

| Symptom | Likely Fix | | :--- | :--- | | Digital output never changes | Adjust the potentiometer (too sensitive or not sensitive enough). | | Detects only at 2mm distance | You need a 10k pull-up resistor on the DO pin (open-collector output). | | Onboard LED always on | The potentiometer is set too high; turn it counter-clockwise. | | Erratic readings on white surface | Add a 10µF capacitor between VCC and GND near the sensor. |

All he had was a partial PDF header: “YL-105 Dual-Factor Biometric Bridge – Preliminary Datasheet v0.9.” yl-105 datasheet

protocol

To read data from the YL-105, you do not need a specific library for the module itself, but rather a library for the being used (e.g., RC Switch, VirtualWire).

Remote Operation

: It typically includes two infrared remote controls for convenient arming and disarming from a distance. Technical Specifications Summary Specification Model Detection Technology PIR Motion Sensor Siren Volume Detection Angle Detection Distance Alarm Duration 45–50 seconds (automatic reset) Material Durable ABS plastic YL-105 The is a commonly used 433MHz Superheterodyne

Comparator Stage (LM393):

The analog output from the 49E feeds into one input of the LM393 comparator. The other input receives a reference voltage derived from the onboard potentiometer.

DIY Smart Alarms

: Can be modified by hobbyists to trigger external relays or IoT notifications. 🔌 Pinout & Wiring (Adapter Version) | | Detects only at 2mm distance |

Sensing Range:

Typically 2 cm to 30 cm (adjustable via onboard potentiometer). Detection Angle: Approximately 35° . Operating Current: