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+
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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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4-Pin Push Button Switch Wiring Diagram
4 pin push button switch wiring diagram should be selected by matching the electrical function, mechanical interface, environment, and verification plan—not by copying a generic diagram or choosing from appearance alone. Four-pin push buttons may contain two contact circuits, one contact plus a lamp, or a connector arrangement specific to the product. A generic internet diagram is therefore unsafe as a final reference. Use the terminal markings, datasheet, and de-energized continuity measurements for the exact unit. This guide gives engineers and OEM buyers a practical way to define the requirement, compare samples, and avoid a part that works on the bench but fails after installation. Application-focused view using the matching LEMA product. What the term means in this application Four-pin push buttons may contain two contact circuits, one contact plus a lamp, or a connector arrangement specific to the product. A generic internet diagram is therefore unsafe as a final reference. Use the terminal markings, datasheet, and de-energized continuity measurements for the exact unit. The first job is to separate the switch's name from its required behavior. Product names are often shortened for search or purchasing, while an engineering drawing defines the contact state, terminal numbering, operating point, allowable travel, mounting reference, and ratings. If those details are missing, two parts with similar names may behave differently. Write the control requirement as a short sequence: the condition before actuation, the physical action that causes actuation, the electrical state after actuation, and the condition that resets it. This sequence prevents confusion between mechanical action and contact logic. It also gives the controls engineer, mechanical designer, buyer, and supplier one shared description to review. Do not treat a catalog current rating as...
↗Maintained vs Momentary Foot Switch
Maintained vs momentary foot switch should be selected by matching the electrical function, mechanical interface, environment, and verification plan—not by copying a generic diagram or choosing from appearance alone. A momentary foot switch returns when pressure is removed; a maintained foot switch remains in its changed state until another action resets it. The choice must follow the machine's control logic and risk assessment. A maintained pedal should not be used merely to avoid holding the pedal down. This guide gives engineers and OEM buyers a practical way to define the requirement, compare samples, and avoid a part that works on the bench but fails after installation. Application-focused view using the matching LEMA product. What the term means in this application A momentary foot switch returns when pressure is removed; a maintained foot switch remains in its changed state until another action resets it. The choice must follow the machine's control logic and risk assessment. A maintained pedal should not be used merely to avoid holding the pedal down. The first job is to separate the switch's name from its required behavior. Product names are often shortened for search or purchasing, while an engineering drawing defines the contact state, terminal numbering, operating point, allowable travel, mounting reference, and ratings. If those details are missing, two parts with similar names may behave differently. Write the control requirement as a short sequence: the condition before actuation, the physical action that causes actuation, the electrical state after actuation, and the condition that resets it. This sequence prevents confusion between mechanical action and contact logic. It also gives the controls engineer, mechanical designer, buyer, and supplier one shared description to review. Do not treat a...
↗4-Pin Toggle Switch Wiring for Illuminated Circuits
4 pin toggle switch wiring diagram should be selected by matching the electrical function, mechanical interface, environment, and verification plan—not by copying a generic diagram or choosing from appearance alone. Many four-pin toggle switches combine a contact circuit with a separate lamp circuit, while others use two independent contact pairs. There is no universal four-pin layout. Identify contact and lamp terminals from the drawing and resistance checks, then confirm whether the lamp is designed for the supply voltage and polarity. This guide gives engineers and OEM buyers a practical way to define the requirement, compare samples, and avoid a part that works on the bench but fails after installation. Application-focused view using the matching LEMA product. What the term means in this application Many four-pin toggle switches combine a contact circuit with a separate lamp circuit, while others use two independent contact pairs. There is no universal four-pin layout. Identify contact and lamp terminals from the drawing and resistance checks, then confirm whether the lamp is designed for the supply voltage and polarity. The first job is to separate the switch's name from its required behavior. Product names are often shortened for search or purchasing, while an engineering drawing defines the contact state, terminal numbering, operating point, allowable travel, mounting reference, and ratings. If those details are missing, two parts with similar names may behave differently. Write the control requirement as a short sequence: the condition before actuation, the physical action that causes actuation, the electrical state after actuation, and the condition that resets it. This sequence prevents confusion between mechanical action and contact logic. It also gives the controls engineer, mechanical designer, buyer, and supplier one shared description to...
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