
Small Stainless Steel Float Switch
Floats are available in 1–4 pieces (optional,or more), and the rod length can be customized.
Notes:Float switches cannot directly control solenoid valves, high-power relays, AC contactors, etc. A small relay HH45P is required for transition.
Meetyour choices
Small and exquisite
stable performance
Simple installation
REED
Application

Description
Up and Down Adjustment: Manually Adjustable for Lower-Open and Upper-Open StatesJudge whether it is upper-open or lower-open according to the mark on the float ball. If the mark faces upward, it indicates the lower-open state; if it faces downward, it indicates the upper-open state.The factory default is the lower-open setting. If the upper-open state is needed, please follow the steps below:
1 Use a pair of vise pliers to remove the circlip under the float switch.
2 Take the float ball off the rod and flip it 180°.
3 Put the float ball back onto the rod and clamp the circlip. At this time, the mark on the float ball faces downward.
4 Check whether it is upper-open and lower-open. Use the buzzer mode of a multimeter to test the on-off state. When the float is at the bottom, the multimeter does not buzz; when the float is at the top, the multimeter buzzes. If so, the adjustment is correct.
Features
The control stroke of the single float switch is 10 mm, which is very sensitive and needs to be used in a water environment without debris or floating objects. If a large liquid level difference needs to be controlled, two can be combined and installed one long and one short, or a double-float switch can be used. Up and Down Adjustment: Manually Adjustable for Lower-Open and Upper-Open StatesJudge whether it is upper-open or lower-open according to the mark on the float ball. If the mark faces upward, it indicates the lower-open state; if it faces downward, it indicates the upper-open state.The factory default is the lower-open setting. If the upper-open state is needed, please follow the steps below: 1 Use a pair of vise pliers to remove the circlip under the float switch. 2 Take the float ball off the rod and flip it 180°. 3 Put the float ball back onto the rod and clamp the circlip. At this time, the mark on the float ball faces downward. 4 Check whether it is upper-open and lower-open. Use the buzzer mode of a multimeter to test the on-off state. When the float is at the bottom, the multimeter does not buzz; when the float is at the top, the multimeter buzzes. If so, the adjustment is correct.
Technical Details
Product Category
1A1/2A1
Max Contact Rating
10VA/50VA
Max Switching Voltage
100V AC/DC 220V AC/DC
Max Swintching Current
0.5A/1.5A
Max Breakdown Voltage
110V AC/DC 300V AC/DC
Max Contact Resistance
100mΩ/100mΩ
Temperature Rating
-30~+120℃/-30~+120℃
Float Ball Materia
SU304
Float Body Material
SU304
Accessories
Can the position of the float ball be moved arbitrarily?
No. The position of the float ball is fixed, with circlips limiting it up and down. Moving the circlips is useless because the reed switch contacts inside are immovable.
Can the float switch directly control water pumps, solenoid valves, or alarms?
No. Because the current of the reed switch contacts inside the float switch is small, controlling large loads will burn them out. To control solenoid valves or alarms, a small relay is needed. To control a water pump, a small relay and an AC contactor (matching the power of the water pump) are required.
What is the control range of the float switch?
There are dimensions and control ranges listed below on our webpage. If the dimensions below are not suitable for you, you can request a non-standard customization, and there is no limit to the quantity.
















