What relay should I use with this for a 12v 3a application?

I used a Chicago Sensor relay P/N RLY004 with base SQC002 sourced from Aqua Hub. $8.00 for the relay & $5.00 for the base. I used this relay to power a Jebao WP-450 (PP377) water pump and actuate a solenoid valve to auto fill a water feature reservoir. This relay handles both operations simultaneously. I chose this type of relay to simplify replacement of relay if necessary. So far after two years of operation the relay has operated flawlessly.

Can it be switched from n.o. to n.c.?

you can rig it up so it sits upside down in the water I suppose.

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uxcell Stainless Steel Float Switch for Water Pump Tank Swimming Pool Garden Pond Liquid Water Level Sensor M10 116mm Length

Product ID: 39171998

Details

Brand
uxcell
Circuit Type
1-way
Connector Type
Screw
Contact Type
Normally Open
Current Rating
0.5 A
Material
Stainless

⚡Max DC 100V switching voltage

🌊116mm length with 300mm wire for versatile installation

🔧M10 screw terminal for secure mounting

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Description

🌟 Stay ahead of the flow with uxcell’s stainless steel float switch — your silent water guardian!

WIDE COMPATIBILITY - Seamlessly integrates with pumps, filtration systems, heaters, and more for smart water management.
COMPACT YET POWERFUL - Small 26x26mm float ball fits discreetly while handling up to 10W switching power.
DURABLE STAINLESS STEEL BUILD - Corrosion-resistant design ensures long-lasting performance in any liquid environment.
FLEXIBLE INSTALLATION OPTIONS - Top or bottom tank mounting adapts to your specific water rising or falling detection needs.
PRECISION WATER LEVEL CONTROL - Automatically triggers pumps and alarms to protect your system with pinpoint accuracy.

The uxcell Stainless Steel Float Switch is a compact, corrosion-resistant liquid level sensor designed for precise water level control in tanks, pools, ponds, and aquariums. Featuring a 116mm length, M10 screw terminal, and 300mm wire, it supports up to 100V DC and 10W power, making it ideal for automatic pump and alarm activation. Its versatile mounting options and durable stainless steel construction ensure reliable, long-term operation across diverse liquid environments.

Specifications

ASIN	B016Q6S2VU
Best Sellers Rank	#121,919 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #35 in Liquid Level Sensors
Brand	uxcell
Brand Name	uxcell
Circuit Type	1-way
Compatible Devices	Pumps, indicators, alarms, heaters, power heads, filtration systems
Connectivity Protocol	Wired
Connector Type	Screw
Contact Material	Stainless Steel
Contact Type	Normally Open
Control Method	Sensor
Control Type	trigger
Current Rating	0.5 A
Customer Reviews	4.2 out of 5 stars 85 Reviews
Global Trade Identification Number	00711331543134
Item Weight	0.27 g
Manufacturer	uxcell
Material Type	Stainless Steel
Model	a14121000ux0091
Mounting Type	Flush-mounted
Number of Items	1
Number of Positions	1
Operating Voltage	100 volts_of_direct_current
Operation Mode	automatic
Part Number	a14121000ux0091
Specification Met	RoHS
Switch Type	Mechanical
Terminal	Screw
UPC	711331543134
Unit Count	1 Count
Wattage	10 watts

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EC$74

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Vincent and the Grenadines.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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