The P25 Liquid Level Sensor- Float Switch is a highly reliable, compact vertical-mount liquid level control sensor engineered to detect fluids inside tanks, reservoirs, and automated water systems. Operating via a low-maintenance magnetic reed mechanism, it utilizes an internal magnet sealed within a moving plastic float ring to cleanly open or close an electrical loop on fluid displacement. This design isolates electrical contacts from direct chemical or fluid wear, establishing a completely non-contact operational baseline. Built with an extended 400mm connection cable and configured natively as a Normally Opened (NO) circuit, it serves as a dependable, zero-fuss fluid control anchor for water dispensers, aquariums, sump pumps, and industrial telemetry setups.
Overview:
The P25 Liquid Level Sensor- Float Switch provides an accessible and highly versatile fluid tracking solution for makers, hobbyists, and rapid prototyping applications. Traditional exposed electrical probe sensors suffer from severe chemical oxidation, calcification deposits, and slow false triggers over time; this physical float module bypasses those environmental constraints entirely. The sensor operates natively as a Normally Opened (NO) circuit when resting at its baseline bottom position, snapping into a closed state when rising fluid levels lift the float ring into active magnetic alignment. Outfitted with an extended 400mm cable lead, it simplifies structural routing through tank lids or chassis frames, connecting straight to 3.3V, 5V, or higher DC logic relays. Whether you are coding an automated hydroponics top-up loop, designing an overflow emergency cutoff system, or building an industrial fluid storage monitor, this compact switch ensures clean, debounced mechanical logic feedback.
Features:
- Normally Opened (NO) Circuit: Standard configuration keeps the circuit detached at the lowest baseline point, snapping into a closed state upon fluid elevation.
- Extended 400mm Cable Leads: Outfitted with extra-long 40cm dual wire extensions for convenient physical routing through deep container frames.
- Magnetic Reed Solid-State Core: Employs a sealed inner reed matrix to eliminate sparking risks and prevent direct fluid contact corrosion.
- Corrosion-Resistant Plastic Build: Molded from premium, lightweight, anti-acid engineering plastics ideal for pure water or non-corrosive chemical storage.
- Universal Microcontroller Interfacing: Operates cleanly across low-voltage 3.3V/5V microcontroller loops as well as handling small DC relay currents.
- Threaded Structural Mounting: Features a standardized threaded end coupled with an elastic sealing washer for leak-free installations in custom drill holes.
- Zero Continuous Power Consumption: Functions strictly as a passive mechanical switch, preserving critical power reserves on remote battery nodes.
- Reversible Operation Blueprint: Float behavior can easily be inverted from Normally Opened to Normally Closed simply by removing the retaining clip and flipping the float ring upside down.
Specification:
- Product Component Type: Vertical Liquid Float Level Control Switch
- Model / Series Profile: P25 Series
- Default Contact Configuration: Normally Opened (NO) Circuit
- Cable Core Length: 400 mm (40 cm)
- Maximum Switching Voltage: 100V DC / AC
- Maximum Switching Current: 0.5A DC
- Maximum Load Carrying Current: 1.0A DC
- Structural Housing Material: PP Plastic (Engineering Grade Polymer)
- Operating Temperature Range: -10°C to 85°C
- Mounting Installation Thread: M10 Standard Spacing
- Net Component Weight: ~12.5 g
Solderless Low-Profile Fluid Management
Take absolute control of your tank volume limitations without bloating your layout packaging. By replacing bulky side-entry float systems with this slim vertical module, your telemetry loops fit into tighter customized enclosures, pocket storage systems, and custom 3D-printed cistern rigs, speeding up rapid assembly chains.
Optimized for Multi-Platform Project Interfacing
— Engineering focused on universal development simplicity. The passive design lets you route this fluid node straight into diverse systems—such as 3.3V ESP32 modules, 5V microcontrollers, or single-board compute arrays—protecting sensitive internal components from floating signal loops via standard pull-up/pull-down lines.
Rugged Construction Tailored for Workbench Duty
- Reliable environmental tracking that is built to handle prolonged usage cycles. Combining an impact-resistant polymer casing shell with a heavy-duty internal spring reed, this P25 board withstands continuous mechanical displacement, preventing micro-disconnection gaps during heavy liquid sloshing operations.
Package includes:
- 1 x P25 Liquid Level Sensor- Float Switch (Normally Opened, with attached 400mm cable)
- 1 x Interlocking Hex Mounting Nut
- 1 x Elastic Rubber Sealing Gasket O-Ring
