Magnetic Float Sensor FS37A (Vertical)
- Product SKU: R0030
- Category: Arduino Ecosystem, Beginner Friendly, ESP32 & NodeMCU Ecosystem, Home-Automation, Security & Surveillance Projects, Sensor Only (Without Module), Sensors, Sensors, Sensors, ₹100 to ₹500
Magnetic Float Sensor FS37A (Vertical)
The Magnetic Float Sensor FS37A is an efficient level detection device designed to monitor liquid levels within tanks. Its uncomplicated design makes it a user-friendly level control solution that operates without complex circuitry or external power supply. This sensor features a mechanical switch that is larger than standard small-sized switches, ensuring reliability and ease of use.
This float switch is adept at detecting liquid levels and can activate pumps, indicators, alarms, and various other devices. It is versatile enough for a wide range of applications, including hydroponics, saltwater and freshwater aquariums, gardening, pet bowls, filtration systems, heating, ponds, basement alarms, marine applications, automotive uses, and much more. The switch can also be easily modified from normally open (NO) to normally closed (NC) by simply inverting the float.
Important Note: The switch has a current carrying capacity of just 0.5A, therefore, it is essential to use a relay or contactor when connecting to a load. Relay and contactor are not included.
Key Features:
Designed for intuitive use, ideal for water level management.
Operates independently without requiring a power source.
Capable of actuating various devices including pumps and alarms.
Easily convertible from normally open to normally closed by inverting the float.
Handles a minimal current of 0.5A.
Supports switching voltages up to 220V.
Applications:
Suitable for household applications such as overhead water tanks and water purifiers.
Ideal for use in hydroponics, aquariums, freshwater and saltwater tanks, gardening, and more. The float switch is mercury-free.
Specifications
Sensor Type |
Magnetic Float Sensor |
Sensor Model |
FS37A Float Sensor |
Output |
Digital Output |
Contact Rating |
10W |
Switching Voltage |
220 V |
Contact Resistance |
100 mΩ |
Dimensions |
45 x 17 mm |
Weight |
50 grams |
Magnetic Float Sensor FS37A (Vertical)
The Magnetic Float Sensor FS37A is an efficient level detection device designed to monitor liquid levels within tanks. Its uncomplicated design makes it a user-friendly level control solution that operates without complex circuitry or external power supply. This sensor features a mechanical switch that is larger than standard small-sized switches, ensuring reliability and ease of use.
This float switch is adept at detecting liquid levels and can activate pumps, indicators, alarms, and various other devices. It is versatile enough for a wide range of applications, including hydroponics, saltwater and freshwater aquariums, gardening, pet bowls, filtration systems, heating, ponds, basement alarms, marine applications, automotive uses, and much more. The switch can also be easily modified from normally open (NO) to normally closed (NC) by simply inverting the float.
Important Note: The switch has a current carrying capacity of just 0.5A, therefore, it is essential to use a relay or contactor when connecting to a load. Relay and contactor are not included.
Key Features:
Designed for intuitive use, ideal for water level management.
Operates independently without requiring a power source.
Capable of actuating various devices including pumps and alarms.
Easily convertible from normally open to normally closed by inverting the float.
Handles a minimal current of 0.5A.
Supports switching voltages up to 220V.
Applications:
Suitable for household applications such as overhead water tanks and water purifiers.
Ideal for use in hydroponics, aquariums, freshwater and saltwater tanks, gardening, and more. The float switch is mercury-free.
Specifications
Sensor Type |
Magnetic Float Sensor |
Sensor Model |
FS37A Float Sensor |
Output |
Digital Output |
Contact Rating |
10W |
Switching Voltage |
220 V |
Contact Resistance |
100 mΩ |
Dimensions |
45 x 17 mm |
Weight |
50 grams |
Return Policy Overview
At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.
Return Window
- Standard Returns: 7 days from delivery date for any reason, including if you simply changed your mind.
- Defective/Damaged Items: 7 days from delivery date for items received damaged or defective.
- Manufacturing Defects (Warranty): 15 days from delivery for manufacturing defects, unless a different warranty period is specified on the product page.
What Can Be Returned
Most items sold on ROBODIUM™ can be returned within the return window, including:
- Items you no longer need or changed your mind about
- Products received in damaged condition
- Items with manufacturing defects
- Wrong items received (item mismatch)
- Missing components inside the package
Return Conditions
To be eligible for a return, items must be:
- In their original, unused condition
- In the original packaging with all accessories, manuals, and free gifts (if any)
- Accompanied by proof of purchase
Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.
How to Initiate a Return
- Contact us via email at support@robodium.com or call +91 8123109966
- Provide your order number and reason for return
- Submit photos/videos of the item (especially for damaged/defective products)
- Our team will review and approve your return request within 1-2 business days
Return Pickup Process
We arrange the return pickup for you - hassle-free returns similar to major e-commerce platforms.
- Once your return is approved, we will coordinate pickup from your location.
- Pack the product securely in its original packaging.
- Include a copy of the order confirmation or packing list.
- Keep the package ready - our logistics partner will collect it at the scheduled time.
Return Shipping Costs
- Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs. No charges to you.
- Change of mind returns: A flat return shipping fee of ₹100 will be deducted from your refund amount.
Refund Process
- Refund Method: Refunds are processed to your original payment method.
- Processing Time: 5-7 business days after we receive and inspect the returned item.
- Refund Amount: Full purchase price minus any applicable return shipping fees.
- Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable).
Replacements
- Once the returned item is inspected and approved, we ship the replacement at no additional cost.
- Replacement items are dispatched within 2 business days of receiving your return.
- If replacement is unavailable, we provide a full refund.
Warranty Terms
All products include a minimum 15-day warranty against manufacturing defects unless otherwise specified on the product page.
Warranty does not cover: misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.
Order Cancellations
- Orders in Pending or Payment Verification status can be canceled for a full refund.
- Contact us immediately at support@robodium.com to cancel before shipping.
- Once an order is shipped, it cannot be canceled but can be returned after delivery.
Customer Service Commitment
- Email Response Time: Within 24 hours on business days
- Phone Support: Monday-Saturday, 10:00 AM - 6:00 PM IST
- Return Request Review: 1-2 business days
- Issue Resolution: Within 48 hours of verification
Need Help?
For any return, refund, or warranty questions, contact us:
📞 +91 8123109966 (Mon-Sat, 10 AM - 6 PM IST)
✉️ support@robodium.com
Last updated: January 2026
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