Use the YL-105 alarm unit for entry-point monitoring in sheds or garages.
The YL-105 is a cordless, self-contained security device. Its technical specifications are:
: It breaks out the standard 2x4 header into a single-row format easier for breadboarding or wiring. VCC : 5V Input (regulated to 3.3V on-board). GND : Ground.
) : Accepts (5V DC standard input derived from a microcontroller power rail). yl-105 datasheet
The small size allows it to be easily integrated into small robotics or IoT projects.
If you find a seller listing YL-105 as a "laser sensor" or "photoresistor module," that is your clue.
Typically 5 Vdc (Acceptable up to 10 Vdc on some models) 1.2.1. Bridge Resistance: 350 ohm 1.2.1. Wetted Parts Material: 17-4 PH stainless steel 1.2.1. Electrical Termination: PTIH-10-6P (or equivalent) 1.2.1. 3. Applications of the YL-105 Sensor Use the YL-105 alarm unit for entry-point monitoring
: Follows the JB/T1472-94 industrial standard.
The designation typically refers to an Infrared PIR Motion Sensor Alarm or a specific Mechanical Seal . Below are the datasheet details for both versions. 1. Infrared Motion Sensor Alarm (YL-105)
To utilize this setup, download and install the through the Arduino IDE Library Manager. VCC : 5V Input (regulated to 3
Detecting the onset of rainfall to close windows or retract awnings. Water Level Monitoring: Basic detection of liquid levels in small containers. Quick Start: Arduino Connection To use the YL-105 with an Arduino, connect VCC to , GND to GND, and A0 to an analog pin (e.g., ). You can use the analogRead() function to get a value between (saturated) and (completely dry). code snippet
The YL-105 wins for flexibility due to its analog output and adjustable trigger point.
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If you want to replicate the YL-105 function on a custom PCB, here is the minimal bill of materials: