Waterproof and dustproofdesign (IP67)
Compact size andcompact structure
Long lifespan andhigh reliability
100% Manufactory
Set up since 2012, our company own the factory, and experienced.
PROFESSIONAL MANUFACTURER OF MICRO SWITCHES
Waterproof and dustproofdesign (IP67)
Compact size andcompact structure
Long lifespan andhigh reliability
Product Quality
Uiled have obtained relevant CCC, CQC, UL, VDE, CE, ENEC enterprise and relevant product certifications.
Sales Market
We have gained a global sales network reaching many countries over North America, South America, Europe, Africa and South East Asia.
After-Sales Service
A complete service network has been established to respond to user requests within 24 hours.
PRODUCTS
The core products include micro switches and travel limit Switch, push button switch, foot switch, toggle switch, AC power socket.
The core products include micro switches and travel limit Switch, push button switch, foot switch, toggle switch, AC power socket.
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ABOUT LEMA
Lema is committed to R&D, production and sales of industrial control electrical switches. The company's core products include micro switches and travel limit Switches, push button switches, foot switches, toggle switches, AC power socket.
After nearly 30 years of steady development, Lema has become a large-scale professional manufacturer of micro switches in China. The company currently covers an area of more than 11,000 square meters.
2000Years
Established in
40+
Exporting countries and regions
10000m2
Factory floor area
60+
Authentication certificate
APPLICATION
Committed to research and development, production, sales of industrial electrical switches and connectors
INDUSTRIAL
AUTOMATION
Industrial automation empowers smart manufacturing with reduced manual labor, higher precision, and greater efficiency.
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Customer recognition is our greatest motivation.
NEWS
Stay updated with the latest developments, product launches, and industry insights.
Hydraulic Cylinder Limit Switches: Position Feedback and Control
Hydraulic Cylinder Limit Switches: Position Feedback and Control Generated from the original WL-D11 product photo. The scene is illustrative and does not verify a hydraulic installation or safety function. A hydraulic limit switch can report that a cylinder, slide or attached mechanism has reached a defined position. It does not measure hydraulic pressure, hold the load or make a machine safe by itself. In a typical external arrangement, a cam, target or moving fixture actuates a mechanically mounted switch; its contacts then provide a signal to a properly designed control circuit. Selection starts with the motion and target geometry, then checks actuator travel, mounting tolerance, electrical load, environment and the controller’s response. Use the hydraulic equipment manufacturer’s instructions and the machine risk assessment to define where a limit switch belongs. Separate position sensing from hydraulic pressure sensing A mechanical limit switch responds to physical movement. It changes contact state when a lever, plunger or other actuator is moved past its operating point. A pressure switch or pressure transducer responds to fluid pressure. The two devices answer different questions: “Where is the moving part?” versus “What pressure is present?” A cylinder can reach a mechanical stop without producing a specific pressure, and pressure can rise while the cylinder is still moving or blocked by an external load. Use an external limit switch when the control sequence needs a discrete indication of extension, retraction or another defined position. Use a pressure-sensing device when the logic depends on pressure level. Some machines need both signals. A switch mounted near a cylinder must not be mistaken for a sensor that is in contact with hydraulic fluid or rated for line pressure. Define the machine...
↗Dental Foot Switch Selection: A Checklist for Equipment OEMs
Dental Foot Switch Selection: A Checklist for Equipment OEMs This generated product image is based on the original LEMA LF-series pedal. It shows a product example, not a verified dental-chair installation or medical certification. A dental foot switch should be selected from the function and interface outward. First identify what the pedal must control—chair movement, an instrument, coolant, or another function—then confirm whether the unit expects a pneumatic signal, an electrical contact, a proportional input, or a combination. The pedal’s shape alone cannot establish compatibility. For an OEM or replacement project, confirm the exact circuit, operating state, connector, cable, mounting, environmental needs and system-level safety evidence before approving a sample. LEMA’s LF Series page lists medical apparatus among possible applications, but it does not identify a specific dental-unit model or establish medical-device certification for every LF variant. Start with the function, not the pedal appearance “Dental foot switch” can refer to several different devices. A pedal may start a handpiece, vary its speed, move a chair, select wet or dry operation, or command another accessory. Some units combine several functions in one control. These actions can use different electrical or pneumatic interfaces even when the pedals look similar. Write down each requested output separately. Record whether the action is hold-to-run or latched, whether the signal varies with pedal travel, and what the equipment should do when the operator releases the pedal, the cable is disconnected, or control power is restored. Do not assume that a single-contact on/off pedal can replace a proportional speed control or a multi-function chair controller. Distinguish pneumatic, electrical and hybrid controls Dental units can use air pressure, electrical contacts or a combination of signals. The control...
↗Push Button Switch for Motor Starters and Contactors
A push button motor starter switch is usually an operator in the starter's control circuit, not the device that carries motor current. In a common three-wire control arrangement, a momentary Start button energizes a starter coil and an auxiliary contact maintains the command; a Stop button interrupts the control path. The motor power contacts belong to the motor starter. Select the pushbutton by its operator, contact function, electrical duty, control voltage and required sequence, then confirm the exact product documentation and machine design. LEMA PBS push-button examples based on an original product-library image. The photograph identifies the product family; it does not specify contact function, rating or starter compatibility. Separate the operator, control circuit and motor power circuit A starter system has several different parts that are often all called a “starter switch.” The front pushbutton is the operator a person presses. Its contact set changes an electrical control signal. A relay or magnetic starter coil receives that control signal and changes the state of the starter's power contacts. Those power contacts connect or disconnect the motor circuit under the starter's design and ratings. An overload device, short-circuit protection, disconnect and enclosure have their own roles. This distinction matters when purchasing. A panel-mount pushbutton may be suitable for a low-energy PLC input or a control-circuit path but not for switching motor current directly. A manual motor starter is a different assembly that can include a switching mechanism and overload protection. Do not treat an operator button, contact block, contactor or manual starter as interchangeable simply because each can be described with the words “push button” or “switch.” The BCcampus Basic Motor Control chapter describes pushbuttons as momentary contacts used in...
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