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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NEWS
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Plunger Limit Switch Side Loading: Diagnose Alignment and Guide the Target
Plunger limit switch side loading occurs when the target or surrounding mechanism applies a transverse load instead of the intended motion along the actuator's permitted direction. It can arise from an angled approach, misalignment, a rubbing target, bracket movement or an inadequately guided part. Diagnose the complete interface before replacing the switch. A larger-looking housing or a deeper actuation setting does not automatically make an unsuitable approach acceptable. The LEMA HL compact limit-switch family supplies the bare-plunger reference used in the figures. The loose guide and target specimens are explanatory objects, not an approved fixture. This guide provides no universal side-force allowance, approach angle or travel limit; use the exact model drawing and manufacturer guidance. Identify the intended direction of actuation Start with the controlled actuator drawing. Identify the motion direction, contact surface, reference point and allowed working travel. Do not infer those details from a catalogue photograph alone. A plain plunger and a roller or lever actuator can require different target arrangements. The plunger selection guide addresses the wider selection context. This article focuses on identifying and removing unintended transverse loading in the machine-side interface. Record the installed orientation and the complete target path. A target can approach correctly at one position but move sideways relative to the plunger as the mechanism rotates, flexes or reverses. Review the movement that actually occurs rather than only the nominal centerline on a sketch. Separate side loading from excessive travel Side loading concerns force direction and contact geometry. Excessive travel concerns how far the actuator is driven. Both can occur together, but they are not the same problem and a correction for one may leave the other unresolved. Measure the relevant positions...
↗Toggle Switch Low-Level Signals: Review Dry-Circuit Compatibility
A toggle switch used for a low-level signal needs evidence for the actual electronic input, not only a high-current power rating. The input voltage and current, contact behavior, permitted signal errors, environment and operating sequence must all be considered. An ordinary continuity beeper can identify a static path but cannot establish reliable service on every dry-circuit or low-current interface. Ask for applicable minimum-load information and validate the complete selector circuit before release. The LEMA LT2210C product is the visible toggle reference in this article. Its appearance or headline power rating does not establish a low-level switching guarantee. The disconnected instruments in the figures illustrate review boundaries, not a tested circuit, recommended pinout or model-specific dry-circuit approval. Define what low level means in the actual circuit Describe the signal source and receiver. Record the input voltage, current through the closed contact, thresholds, leakage paths, wiring and the intended response. A logic input, resistive sensing network and analogue measurement path can impose different requirements even when their nominal supply is similar. Avoid treating “dry circuit” as a universal voltage or current limit. Terminology and test conditions need to be understood in the relevant specification. State the actual values and acceptance criteria for the equipment instead of relying on an undefined label. The NIST guidance on electric current provides the unit basis. Keep ampere, milliampere and microampere values distinct when preparing the review; a unit mistake can conceal how little current an electronic input actually supplies. Separate maximum load capacity from minimum-load suitability A power rating addresses operation under stated load conditions. It does not automatically answer whether the contact will provide the required behavior at a much smaller signal level. Likewise, a...
↗Micro Switch Sample Approval: Build an OEM Qualification Record
Micro switch sample approval should establish whether an identified component and assembly meet a defined OEM requirement. It is not simply a request for a few parts that look similar to an existing switch. Freeze the intended function, interfaces, circuit and operating conditions, identify the submitted samples, and agree the evidence needed before making a release decision. A successful hand-operated continuity check is a useful observation, not a complete design qualification. The LEMA KW7 family provides the product reference for organizing actuator, terminal and force options. The samples pictured here are illustrative specimens, not certified approval samples or evidence of a completed OEM qualification. Use the exact proposed order code and current controlled documents. Begin with the requirement the sample must answer Write down the equipment function and the reason for evaluating the candidate. Is it a new design, a form-and-fit alternative, a different actuator or an interface to a particular controller input? A sample plan should answer that decision rather than collect measurements without a purpose. Identify the required contact function, electrical duty, mounting references, available travel, force constraints, environmental exposure and expected operating sequence. Mark unknown fields explicitly. Do not let a sample's convenient availability silently define the final equipment requirement. The custom OEM inquiry guide supports the initial communication. Sample approval turns that inquiry into a controlled comparison between the stated requirement and the actual submitted configuration. Freeze the candidate identity before testing Record the full order code, drawing revision, actuator, terminal type, contact arrangement and relevant rating option. Link the samples to the supplier's submission and any available lot or production identification. A family name alone is insufficient when several visible or internal variants can exist....
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