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.
6-Pin Toggle Switch Wiring: Verify a DPDT Terminal Layout
6-pin toggle switch wiring usually refers to a double-pole, double-throw (DPDT) switch: two independent changeover contact sets operated by one handle. Each pole has a common and two possible throws, giving six external terminals. Do not wire a switch from the pin count or a generic photograph alone. Identify the exact model and its ON-ON, ON-OFF-ON, momentary, or other action; then test the de-energized terminals for continuity in every handle position. Only after that map should a qualified person connect a circuit that fits the switch's ratings and the equipment's protection design. This guide focuses on terminal identification and verification, not an untested universal pinout. Original LEMA LT2220C product photo. Six flat terminals can be inspected from this angle; their functional mapping must still be verified from the exact drawing and continuity test. What six terminals mean—and what they do not A DPDT toggle is functionally two SPDT changeover contacts moved together. Pole A and pole B are electrically separate until an external circuit connects them. Each pole has a common terminal that connects to one throw in one position and the other throw in the opposite position. The switch can route two independent signals, or be arranged for another appropriate application after the circuit designer verifies ratings and fault behavior. Six terminals do not reveal which physical lug is common on a particular model, and they do not reveal whether the center position is OFF. The City Tech electronics lab manual treats a DPDT as a two-state input and explicitly tells students to check continuity because a real switch can differ from the illustrated pattern. A South African Department of Basic Education learner book explains a DPDT as two...
↗Micro Switch Electrical Life vs Mechanical Life: What the Ratings Mean
Micro switch electrical life vs mechanical life compares two different endurance tests. Mechanical life counts operations at a stated speed and travel without an energized contact load. Electrical life counts operations while the contacts switch a specified voltage, current, and load type. The figures are not interchangeable, and neither is a calendar-life promise for a finished machine. A buyer should ask for the exact model's test conditions, then compare them with the machine's real actuation rate, overtravel, inrush, duty cycle, environment, and acceptable failure risk. This guide explains how to read those figures without inventing a life rating for a LEMA part that has not been tested in your assembly. Original LEMA KW12-series product photo. The plunger and lever affect how the switch is operated; the image itself does not establish a cycle-life rating. What is mechanical life? Mechanical life, also called mechanical durability, describes the number of full switch operations achieved under a stated mechanical test, normally with the contact circuit not energized. An operation means the actuator is moved through its specified operating and release sequence, not merely touched. The test must define operation frequency, stroke or overtravel, operating speed, mounting, and the criterion used to call the switch failed. A mechanism can lose its snap action, spring force, return behavior, or dimensional stability even if no electrical load is switched. The IEC 61020-1 publication description identifies electromechanical switches as devices that change an electrical connection through mechanical contact motion and says the generic specification addresses terminology and test methods. That is a useful framework, not evidence that any particular KW12 model meets a specific endurance value. For the mechanical side of a purchased model, request the manufacturer's...
↗Mechanical Limit Switch vs Proximity Sensor: Selection Guide
Mechanical limit switch vs proximity sensor is a choice between detecting a position through physical contact and detecting a target without touching it. A mechanical limit switch changes its electrical contacts when a machine part moves its actuator. A proximity sensor detects a target within its sensing field and provides an electronic output. Neither is universally more accurate, rugged, or safe. The correct choice depends on target material, travel and alignment, switching frequency, environment, control-system input, maintenance access, and the consequence of a missed or false signal. This guide compares those decisions for equipment designers and OEM buyers without assuming that a product photo proves an application rating. LEMA HL-series product image: two mechanical actuator styles, not proximity sensors. Compare the exact model drawing before selecting a mounting position. What each device actually detects A mechanical limit switch reports that its actuator has moved far enough to transfer its contacts. The machine cam, door, carriage, or other moving part must make contact with the lever, roller, or plunger. The switch does not directly measure the absolute position of the whole machine; it reports one defined state at the switch mounting location. Its operating and release positions, pretravel, overtravel, and approach direction all matter. A cam can touch the actuator yet fail to move it enough to change state. “Proximity sensor” covers several technologies, not one interchangeable part. An inductive sensor responds to a suitable metal target through an electromagnetic field; a capacitive, magnetic, or photoelectric device uses a different physical principle and has different target and environmental limitations. The Worcester Polytechnic Institute robotics documentation distinguishes mechanical and inductive proximity switches, while a Gulf Coast State College PLC lab explains that...
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