3S Float Switches & Liquid Probes | Reliable Level Control for Water & Pumps

Our 3S float switches and liquid probes provide a fundamental and highly reliable mechanical solution for point-level detection and control.

Core Features & Benefits:

Simple & Reliable: The 3S15 Series float switches use mechanical actuation, offering a simple design and passive reliability.

Durable Design: 

The 3S-LP Series liquid probes feature 304 stainless steel heads and anti-oxidation pure copper wire cores for accurate conductivity detection.

Strong Compatibility: 

Dry contact (switch signal) output allows seamless integration with pump controllers, including dual-pump controllers, for level linkage start-stop.

Application & Durability:

Ideal for building water supply/drainage systems, sump pumps, and industrial tank level alarms.

Available in multiple cable lengths with a weather-resistant rubber sheath (-40℃ to 90℃) for dependable performance in various conditions.

Q1: Does the product support custom cable lengths?

A1: Standard lengths are 1m to 10m. For special lengths, please contact the sales engineer to confirm customization feasibility for your 3S intelligent sensor

Q2: Can liquid probes or float switches be used with dual-pump controllers?

A2: Yes. The output of 3S float switches and liquid probes is passive dry contacts, compatible with the full range of 3S pump controllers, and can be used for liquid level linkage start-stop and pump group switching.