Wireless Level and Float Switches

Wireless Float Switches

A wireless float switch detects the level of a liquid in a tank or container. It floats on top of the liquid and functions as a mechanical switch as the liquid level rises or lowers. Wireless float switch systems are used to control pumps, valves, motors, or alarms. They are a cost-effective solution when the distance needed to run wires is a problem. Wireless float switches can be used with a wide variety of liquids.

How does a wireless float switch work?

A wireless float switch is a mechanical switch that floats on top of a liquid surface. As the liquid level goes up or down, it moves with the liquid. Depending upon how the counterweight is anchored the mechanical switch opens or closes at a certain liquid height. This allows an electrical current to pass through it completing the input circuit to a wireless switch transmitter. The wireless switch transmitter then send a command to the wireless receiver a great distance away to activate a relay.

How does the Float Switch function?

A standard float switch consists of a hollow body that floats and an internal switch. The most common type of internal switch used in float switches are known as a reed switch. A magnet inside the body activates the reed switch when the float tilts down or up. There are a few other types of internal switches, but the working principle that they open or close due to float angle and water level moving the float switch vertically up or down is the same.

Float Switch Counterweights

Most float switches use an external counterweight. These type of float switches with counterweights have set angles at which they operate and will activate the internal switch. The cable length between the counterweight and the float switch creates the angle with the water level.

Types of Float Switches


Model: FS-0062 Float Switch

  • Float Switch with cable and adjustable counterweight
  • Normally open and normally closed (empty and fill) operations
  • Rated up to 250 volts operations at up to 13 Amps or 1/2 HP
  • Temperature ratings from 32F to 140F, and rated to IP68, with CE and IEC approvals

This dual-purpose float switch can be used for both emptying and filling operations. - Directly Controls pumps up to 1/2 HP at 120 Volts or 220 Volts- Up to 12 Amperes continuous or 13.3 Non continuous AC Amperage- 12 VDC motor loads up to 13.3 Amps. Contact us for other DC Applications- Environmental friendly (Mercury Free)- suitable for use in septic, sump, and potable water applications- Built with a Micro switch, rated for 100,000 operations- Cable is Coated with PVC/Thermoplastic jacket- Internally Contains a Stainless Steel Ball- Includes adjustable counterweight (counterweight not potable).- Manufactured in Argentina- 5 Year Warranty- Constructed with non-toxic polypropylene- Float dimensions are 4.1 in x 3 in x 1.6 in (105 x 78 x 41 mm)- Rated for indoor or outdoor use: operating temperatures 32 to 140F (0 to 60C)- CE Marked, IP68 Rated, tested to IEC 60730-1 (08-2003) + IEC 60730-2-16 (08-2001)- Reinforced Double O Ring Cable Entry

Stainless Steel Float Switch

Series: SSFS-1-10W Float Switch


  • Float Switch with Stainless Steel Shaft & Float
  • Vertically Mounted Float Switch
  • Available in 2, 4, 5, 6, 8 or 10" Shaft Length


  • High or Low Water Alarm
  • Water Tank Level Controls


This float switch is a device used to sense the level of liquid within a tank. When used to activate a relay or contactor this switch can turn on a pump, an indicator, an alarm, or other device. The versatility of this vertically mounted sensor means that it can be installed either at the top or bottom of your tank, depending on whether you need to detect the water's rise or fall.