The FH-401 multi level float switch is a high-precision, cost-effective multi-point liquid level detection and control sensor independently developed for civil and home appliance scenarios. Adopting mature magnetic reed switch induction technology, this integrated float level switch supports multi-point liquid level monitoring, realizing automatic liquid level alarm, pump start-stop and liquid level balance control. It features a compact integrated structure, fully sealed waterproof design and strong environmental adaptability, perfectly adapting to water tanks, storage barrels and various closed liquid containers in household and civil equipment. Available in standard specifications and fully customizable solutions, it can meet standardized batch matching and personalized non-standard installation needs for different scenarios, with stable long-term operation and ultra-low failure rate.
Product Features
Multi-point Accurate Level Control
Equipped with high-sensitivity reed switch components, the switch supports customized multi-level detection points (low, medium, high liquid level). It achieves real-time and accurate liquid level monitoring, effectively solving the problems of liquid overflow and liquid shortage, and realizes fully automatic intelligent level control without manual intervention.
Fully Sealed & Durable Structure
The whole machine adopts integrated sealing process with no exposed electrical components. The probe and float are made of high-quality corrosion-resistant and waterproof materials, which can resist water vapor erosion and liquid corrosion. It supports long-term submerged operation and has a long service life, free from frequent replacement and maintenance troubles.
Passive & Low Power Consumption Design
Adopting passive mechanical induction working mode, no external power supply is required for switching signal output. It features low power consumption, high safety and no electromagnetic interference, which effectively avoids circuit failure risks and is safer for household and civil electrical equipment matching.
Strong Compatibility & Easy Matching
The switch outputs standard switching signals, which can be perfectly matched with water pumps, solenoid valves, alarm devices and household intelligent control systems. It supports automatic liquid supply and drainage linkage control, with high compatibility and flexible application, suitable for most civil and home appliance liquid level control scenarios.
Working Principle
The FH-401 multi level float switch adopts magnetic induction reed switch working principle. Multiple high-precision reed switches are fixedly installed inside the sealed non-magnetic probe tube, and the magnetic float is sleeved on the outer side of the probe. When the liquid level rises or falls, the buoyancy drives the magnetic float to move up and down along the probe tube. When the float passes the preset liquid level detection point, the built-in magnet of the float will trigger the corresponding reed switch to open or close, and output accurate on-off signal. The system can identify real-time liquid level height according to the signal changes, so as to realize automatic control of liquid level alarm, pump start and stop, and liquid supply and drainage.
Product Parameters
|
Parameter Item |
Technical Specification |
|
Product Model |
FH-401 Multi Level Float Switch |
|
Detection Points |
2-4 points (customizable) |
|
Working Voltage |
DC 5V-24V |
|
Max Load Current |
0.5A |
|
Detection Accuracy |
±5mm |
|
Working Temperature |
-20℃ ~ +80℃ |
|
Sealing Grade |
IP68 |
|
Probe Material |
PP / SUS304 Stainless Steel (optional) |
|
Float Material |
High-density Waterproof Plastic / Stainless Steel |
|
Signal Output |
Switch On/Off Signal |
|
Service Life |
≥100,000 Times Switching |
Application Fields
The FH-401 multi level float switch is specially optimized for civil and home appliance fields, with strong scenario adaptability and high cost performance. In the home appliance industry, it is widely used in water purifiers, water dispensers, washing machines, humidifiers, air conditioners, water heaters and other equipment to realize automatic water level control and anti-overflow protection. In civil fields, it is applicable to household water tanks, rooftop water storage buckets, community water supply equipment, small civil water treatment devices and indoor water circulation systems, providing stable and reliable liquid level monitoring and automatic control solutions for daily civil water use and small household electrical equipment.
Installation Method
This multi level float switch supports two mainstream installation methods with simple operation and no complex debugging required. Top-mounted installation is the standard method: fix the probe on the top opening of the liquid tank, vertically extend the probe into the liquid, which is suitable for most closed household water tanks and home appliance water storage structures, with stable installation and not easy to shake. Side-mounted installation is optional for special scenarios: install the switch on the side reserved hole of the tank body, suitable for open civil water tanks and equipment with limited top space. Both installation methods support quick disassembly and assembly, and the vertical installation angle can be fine-tuned according to on-site working conditions to ensure accurate liquid level detection.
Customizable Options
1. Structural Customization
Support customized probe length, float size, detection point spacing and number of detection points (2-4 points optional) to adapt to tanks of different heights and capacity specifications.
2. Material Customization
Provide multiple material options including PP plastic, SUS304 and SUS316 stainless steel for probe and float, meeting the corrosion resistance requirements of different water quality and working environments.
3. Interface & Signal Customization
Customize wire length, connector type and signal output mode, support matching different equipment control systems and installation space requirements.
Why Choose Us
Reliable Product Quality: Adopt high-quality raw materials and advanced sealing technology, with stable product performance, strong anti-interference ability and long service life, zero failure rate in long-term household and civil scenario application.
Flexible Customization Capability: Professional R&D and technical team quickly responds to customer customization needs, provides free scheme design and technical consultation, and supports small-batch personalized customization and large-batch standardized ordering.
Cost-effective & Fast Delivery: Direct factory sales without middlemen markup, with superior product cost performance. Sufficient standard product inventory ensures fast delivery, and customized products are delivered efficiently with guaranteed cycle.
Perfect After-sales Service: Provide long-term after-sales guarantee, professional technical support and installation guidance, solve customer product matching and use problems in real time, and let customers purchase and use without worries.
FAQ
Q: Is the FH-401 multi level float switch suitable for tap water and domestic water scenarios?
A: Yes. The product is specially optimized for civil and household water environments. The materials are safe, non-toxic and corrosion-resistant, which fully adapts to tap water, purified water and daily domestic water, and is the preferred solution for household equipment water level control.
Q: Can the switch work stably in long-term submerged state?
A: Absolutely. The whole machine reaches IP68 waterproof grade, with fully sealed integrated structure. It can work stably underwater for a long time, resistant to water vapor erosion and leakage, and will not be affected by submerged environment.
Q: How long is the product delivery cycle?
A: Standard FH-401 products are in stock and can be delivered within 3 working days. For customized products, we will confirm the scheme within 24 hours and complete production and delivery according to the agreed cycle.
Q: Is technical support provided for installation and commissioning?
A: Yes. We provide free professional installation guidance and technical commissioning support, and solve all technical problems encountered in product matching and use for customers.
Q: Can multiple switches be used in tandem for multi-stage level control?
A: Support. According to customer's multi-stage liquid level control needs, we can customize multi-point single-device detection scheme or multi-device tandem matching scheme to meet complex level control requirements.
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