Are you using the variant or the high-power PA+LNA hardware ?
Datasheets typically state the trigger current as "5mA to 15mA." This is accurate for the optocoupler’s LED. However, the better interpretation concerns your microcontroller’s pin driving capability. yl105 datasheet better
| Application | Installation Method | Key Challenge Solved | | :--- | :--- | :--- | | Drinking water | Submersible / Pipe mount | Accurate low-concentration detection | | Industrial wastewater | Submersible | Handles corrosive environments | | Desalination plant inlet | Pipe mount | Prevents membrane damage from residual chlorine | | Cooling tower water | Submersible | Real-time monitoring for corrosion control | | Reverse osmosis feed | In-line | Protects sensitive RO membranes | Are you using the variant or the high-power PA+LNA hardware
The YL-105 utilizes the AMS1117-3.3 chip. Unlike a simple resistor-based voltage divider which can suffer from voltage drops when the nRF24L01 increases current during transmission, the AMS1117 provides a constant, regulated 3.3V. B. High-Current Stability | Application | Installation Method | Key Challenge
Connecting the transceiver directly to a development board's 3.3V rail frequently triggers voltage drops during high-current radio bursts (such as packet transmissions or automatic re-transmissions). The YL-105 bridges this gap by decoupling the radio module from the shared microcontroller power grid. Core Specifications: The Tech Behind the YL-105 Shield
High Power Supply Rejection Ratio (PSRR) to filter out digital switching noise. Peak currents up to 800mA (LDO rated)