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.
VIEW MORE PRODUCTS
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.
VIEW MORE
TRACK TRAFFIC
HOME APPLIANCES
MEDICAL FACILITIES
TEXTILE FIELD
Certificate Display
Customer recognition is our greatest motivation.
NEWS
Stay updated with the latest developments, product launches, and industry insights.
Push Button Switch Troubleshooting: Contacts, Wiring and Control Inputs
Push button switch troubleshooting works best when you separate four possible faults: the actuator, the electrical contacts, the wiring, and the receiving control circuit. A button that feels normal can still have a bad connection; a working contact can still send a signal that the machine ignores. Begin with the circuit drawing and the expected released and pressed states, then isolate the machine before inspecting or measuring the switch. This guide helps industrial equipment builders and maintenance teams locate the fault without assuming that every failure requires a new button. The examples concern ordinary control inputs. Emergency stops, guard circuits and other protective functions require their own approved procedures and validation. Never bypass a protective device to keep production running. Record the symptom before moving any wires Write down exactly what fails: no response, delayed response, several responses from one press, a button that stays down, or an indicator lamp that stops working. Also record whether the failure occurs after cleaning, after vibration, at startup, or only after the equipment has been running. These conditions help distinguish a damaged component from installation stress or a problem elsewhere in the circuit. Identify the switch order code, drawing revision, terminal designations, control voltage, connected load and intended action. A maintained button should remain in its selected state; a momentary button should return when released. Mistaking one for the other produces a false diagnosis. Compare the installed device with the approved bill of materials rather than relying on color or appearance. Use the industrial push button selection guide to review the original application requirements. Troubleshooting should confirm those requirements, not quietly change them. Isolate energy before mechanical or continuity checks Stop the equipment...
↗How to Test a Foot Switch: Isolated Contact and Cable Checks
To test a foot switch, identify its intended contact function, safely isolate and disconnect it from the equipment, and check the specified contact pair in both released and operated states. A multimeter can help screen an ordinary mechanical switch for an open circuit or an inconsistent connection. It cannot establish a pedal's load rating, safety approval or suitability for a particular machine. This guide covers a repeatable inspection record for industrial foot controls, including the pedal, cable and connector, so you can distinguish a switch fault from a harness or controller problem. Do not apply this procedure unchanged to electronic, variable-speed, medical or safety-rated pedals. Their circuits and verification requirements may be different. Follow the exact equipment and pedal documentation. Identify the device before choosing a test A foot-operated device may be a simple contact switch, a potentiometer, an electronic sensor or a multi-stage control. Some pedal assemblies have several independent contacts. Others send a coded signal to a controller. Testing every pair of wires as though it were a dry contact can produce misleading results or damage an electronic assembly. Read the order code and terminal diagram. Record whether the action is momentary or maintained, whether the intended contact is normally open or normally closed, and whether the connector contains additional circuits. Do not infer function from a connector's shape, wire colors or the appearance of a similar pedal. The relevant drawing should describe the particular order code being tested. The industrial electric foot switch selection guide explains the wider specification questions. This test guide focuses on locating an existing fault without changing those requirements. Prepare an isolated, controlled test Follow the site's energy-control procedure and verify the safe...
↗Foot Switch for Pump Control: Action, Interface and OEM Checklist
A foot switch for a pump should normally be selected as part of the pump's control system: define the required pedal action, identify the receiving input or switching device, and verify the complete electrical duty before connecting a load. A momentary pedal can request pumping while held; a maintained pedal can request a continuing state. Neither action automatically provides safe stopping, accurate dosing or protection against unexpected restart. This guide gives equipment builders a practical specification and validation checklist for electrical foot controls used around pumping operations. It concerns an electrical command device, not a pedal-operated mechanical pump or a pneumatic valve. An ordinary industrial pedal must not be assumed suitable for medical treatment, hazardous fluids or a safety function without the applicable system assessment. Describe the pumping task before choosing the pedal Start with the operator's task. Does the operator need both hands to position a container, hold a hose or align a fixture? Is the command intended to run the pump continuously, request a timed cycle or permit a process only while the pedal is held? These are different control functions. The same physical pedal can produce very different machine behavior depending on the receiving circuit. Record the fluid, pump type, location and consequences of an unintended command. Include the pressure and motion hazards, splash exposure, nearby moving equipment and the operator's working position. A hands-free command can be convenient while introducing a new risk of accidental operation. Decide how the overall machine prevents that event before specifying a pedal's color or enclosure material. The industrial foot switch selection guide provides the broader component-selection framework. The pump-specific questions below should become part of the equipment specification and acceptance...
↗