1pcs Capacitive Contactless Level Sensor M03/M04 No Liquid Immersion Water Tank High Low Water Alarm Control Board

Semi-finishedproduct : No High-concerned chemical : none Electronic : No Model Number : M03 M04 DIY Supplies : Electrical Brand Name : Stlxy Origin : Mainland China

Working Principle: Capacitive sensing principle, adheres to the outer wall of the container, eliminating the need for electrode immersion in liquids Model differentiation M03: Power supply DC 3.3V～5V, compatible with 3.3V/5V microcontroller systems such as Arduino and ESP32 M04: Power Supply DC 3.3V~24V Wide Voltage Range, Compatible with Industrial Control DC Power and Lithium Battery Systems Induction thickness: The container wall thickness is recommended to be within 3mm to 4.5mm; only suitable for non-metal containers such as plastic and glass ️ Not suitable for metal enclosures Signal output: Digital level output; low level when liquid is detected, high level when no liquid is present Sensitivity: Onboard adjustable capacitance component for fine-tuning sensing sensitivity, suitable for containers with varying wall thicknesses Pin Definition: VCC Power, GND Ground, OUT Signal Output, Standard Pad for Easy Soldering Leads Advantageous features: The probe does not contact the water body, eliminating issues such as electrode scaling, corrosion, and electrolytic contamination Applicable liquids: tap water, purified water, and some conductive aqueous solutions; not suitable for highly insulating pure oil media Adopt capacitive induction principle, paste on the outer wall of container, no electrode immersed into liquid. Two models available: M03: DC 3.3V~5V for MCU; M04: DC 3.3V~24V wide voltage for industrial equipment. Suitable for plastic and glass containers, wall thickness within 3~4.5mm. Digital level output: low level when liquid detected, high level without liquid. Onboard adjustable component to tune sensing sensitivity for different tank thickness. No direct contact with liquid, avoid electrode fouling, corrosion and liquid contamination. Perfect for water dispenser, humidifier, water tank automatic water supply and liquid alarm projects. Notice: NOT work for metal containers; not recommended for pure insulating oil. label:yes