SUNS

What SUNS does

SUNS International LLC is a privately held U.S.-based manufacturer of electromechanical and electronic industrial components, founded in 1993 and headquartered in Chelmsford, Massachusetts. The company designs and produces an extensive catalog of more than 30 product categories spanning limit switches, safety switches, industrial and medical foot switches, micro and miniature switches, pushbuttons, capacitive touch controls, proximity and Hall-effect sensors, inclinometers, industrial joysticks, electronic throttle controls, CAN bus keypads and control modules, elevator interlocks, audio/visual signaling devices, and terminal blocks. Its manufacturing operations are ISO9001:2015 certified, and products carry UL, CSA, CE, and CCC certifications, with medical-grade foot switches additionally holding IEC60601 certification issued by TUV.

The company serves seven primary vertical segments: medical equipment manufacturers (primary), elevator and escalator manufacturers (primary), industrial automation, construction equipment, material handling, renewable energy, and textile machinery. SUNS operates a channel-led go-to-market model, selling through a network of U.S. regional sales representatives, named distributors in Canada, Thailand, and the Philippines, and authorized residential elevator dealers across the U.S. Unit-based pricing applies (the recalled SS6291 solenoid interlock was sold at approximately $200 per unit), with no publicly disclosed enterprise contract structures. The company supplements its distribution channel with a cross-reference compatibility tool that allows engineers to identify SUNS equivalents for discontinued (EOL) parts from major manufacturers including Honeywell, Schneider, Omron, Allen-Bradley, Siemens, and ABB. In 2026, the company announced a U.S. Consumer Product Safety Commission recall of approximately 7,000 SS6291 solenoid interlock switches used in residential elevators due to a defect posing fall/injury risk.

Name

SUNS

Legal name

SUNS International LLC

Website

https://suns-usa.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

101–250 employees

Short description

SUNS International LLC is a U.S.-based manufacturer of electromechanical and electronic industrial components, including limit switches, safety switches, foot switches, sensors, and CAN bus controls, serving medical equipment, elevator, industrial automation, and construction equipment manufacturers across North America, Europe, and Asia Pacific.

Ownership category

akta.pro rank

Product category

Industrial Electromechanical Components

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Electrical Equipment Manufacturing (33531)

SIC

Electronic Components & Accessories (3670)

akta.pro primary industry

Passenger Vehicle Electrical & Electronics Manufacturing (ICE) (IMACAAAK)

akta.pro secondary industries

Automotive Lighting Systems & Components Manufacturing (LED/Headlamps/Signal/Interior) (IMACAJAF), Powersports Electrical & Electronics Manufacturing (ECUs/BMS/Sensors/Wiring/Lighting) (IMACAEAL)

Keywords

• Industrial limit switches
• Electromechanical control components
• Safety interlock switches
• Medical foot switches
• CAN bus controls

Headquarters

HQ city

Chelmsford

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Electromechanical Components Sales: SUNS generates revenue through the sale of electromechanical and electronic components including limit switches, safety switches, foot switches, micro switches, sensors, and control systems. The company offers an extensive product catalog with products sold at various price points, with recalled SS6291 interlock switches sold for approximately $200 each.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels4 records

Core offering

SUNS manufactures and sells industrial electromechanical and electronic control components including limit switches, safety switches, foot switches, micro switches, sensors, and CAN Bus control systems. The company supplies manufacturers and integrators across medical equipment, elevator/escalator, industrial automation, construction equipment, material handling, renewable energy, and textile machinery verticals through authorized sales representatives and distributors in the US, Canada, Thailand, the Philippines, China, and Europe.

Product overview

SUNS is a manufacturer of electromechanical and electronic components with over 30 years of experience, offering an extensive portfolio of industrial switches and sensors. The product lineup includes Limit Switches (compact, safety, enclosed, and environmentally sealed variants across AZ8, SN, SM, SSD, SF, SP, HEN series), Elevator Interlock products (SS6291 solenoid interlocks, EDL door contacts), Safety Switches (cable pull, interlocking, solenoid interlocks, RFID non-contact), Wireless Limit Switches (HNS series), Heavy Duty and Explosion Proof switches, Industrial and Medical Foot Switches (including USB and wireless variants with IPX8 ratings), Micro/Miniature/Toggle/Rocker switches, CAN Bus Controls (SCB/ECJ/SCJ keypads, solid state control modules), Hall-effect and Inclinometer sensors, Pushbuttons (22mm/30mm with IP65-IP69K ratings), Capacitive Touch Buttons, LED Indicator Lights, Pendant Control Stations, Proximity Switches, Shifter/Turn Signal controls, Industrial Joysticks (JST series with Hall Effect), Electronic Throttle Controls (TPS series), Audio/Visual Signaling devices, Load Cells, Ignition Switches, Hour Meters, and Terminal Blocks. The company provides ISO9001:2015 compliant manufacturing with UL, CSA, CE, and CCC certified products. SUNS also offers cross-reference tools for competitor product replacements including Honeywell, Schneider, Siemens, ABB, Omron, and others.

Differentiator

Problem solved

Functional benefit

Products and services

• Limit Switches Precision electromechanical limit switches in compact, safety, enclosed, and environmentally sealed variants for industrial machinery OEMs and system integrators.
• Elevator Interlock Switches Safety interlock switches and door contacts for residential and commercial elevators, including the SS6291 solenoid safety interlock and EDL series door contacts.
• Safety Switches Industrial safety switches including cable pull switches, interlocking safety switches, hinge/lid safety switches, solenoid interlocks, elevator door contacts, and RFID non-contact safety switches.
• Wireless Limit Switches HNS Series wireless limit switches for industrial applications requiring cable-free installation.
• Heavy Duty Limit Switches HMS/HLS/HNS series heavy duty limit switches and SNB/SNH series for demanding industrial environments.
• Explosion Proof Limit Switches HES, HEX, HCX, and SP9-EX series explosion-proof limit switches for hazardous environments.
• Industrial Foot Switches Heavy-duty foot switches for industrial machinery including light, medium, and heavy duty models, air actuated series, and dedicated press brake and emergency stop variants.
• Medical Foot Switches IPX8-rated medical foot switches including FS-81-W, FS-82-W, FS-83-W, FSR-2, FX-8, MED-170/110, and customized variants for medical diagnostic, surgical, and therapeutic equipment OEMs.
• USB Medical Foot Switches USB-connected medical foot switches including FS-81-SP, FS81-SP-W, FS81-SP-CS, FSR-2, FS-62-SP, FS82-SP, FS82-SP-W, FS83-SP-W, FSB-3, FS72S-10W-B, and multi-pedal configurations for medical OEMs.
• Wireless Foot Switches Wireless foot switches with receiver and USB wireless foot switches for flexible industrial and medical applications.
• Micro Switches Micro switches including Z-15G, ZY-10G, ZD-10G, ZS-15G, ZX-10G, ZT1H-10G, SLD7/S-72 waterproof, LS rubber overmold, S-19/S-20, S-13/S-14, VS, VM/VA/VB, VS-W, VC, VP miniature basic, SXP/SXP3 series, SW-3 snap action, and AC door interlock switches.
• Miniature Switches Miniature and sub-miniature switches including X3/X3M, X4/X4M, ZM3/ZM3M, ZM4, ZP3, ZP3W, ZP4, ZA/ZB4 double-break switches, and TS mold protective switches.
• Toggle Switches TL7 and TN8/TL8 series toggle switches with TN-G guard option for industrial control applications.
• Rocker Switches TR3 through TR7 series rocker switches for industrial and commercial applications.
• CAN Bus Controls SAE J1939 CAN and ISO11898 CANOpen compatible controls including SCB/SCJ/ECB CAN bus keypads, I-O module, solid state control, display module, and SCFR multiplexed vehicle electrical center for mobile equipment and vehicle OEMs.
• SCM Series CANBUS Solid State Control Module Advanced CAN bus solid state control module supporting SAE J1939 CAN or ISO11898 CANOpen protocols with up to 42 high-side outputs, max bus current 75A-300A, IP69K rated, 18-32VDC operating voltage.
• SCB/ECB/SCJ Series CANBUS Keypads IP69K sealed CAN bus keypads with exceptional tactile and audible feedback of switch actuation for mobile equipment control.
• Hall-effect Sensors SR_ hall-effect rotary sensors, SRD/SRJ/SRT hall-effect rotatory sensors, and SRS series for position and motion sensing in industrial and vehicle applications.
• Inclinometer Sensors (Tilt Sensors) AP(M)/BP/CP/DP series and TP/RP series inclinometer and tilt sensors for angle measurement applications in industrial and vehicle equipment.
• Pushbutton Switches 22mm and 30mm industrial pushbuttons including PP12, PM16/PP16, PP22 push-pull and E-stop, MB22 monolithic, PT(M)22, PB/PBM22 (IP65/IP67/IP69K), and PB30/PBM30 series.
• Capacitive Touch Buttons CPB22-CPB30 and CPB45-CPB60 series capacitive pushbuttons rated IP69K for touch-sensitive industrial control applications.
• LED Indicator Lights LED indicator lights in six series (IL 1 through IL 6) for industrial status indication.
• Pendant & Control Stations CSB, CSD, CSE, CSH, and CSN series pendant and control stations for industrial machinery operation.
• Proximity Switches SLC-08, SLC-12, SLC-18, SLC-30, SLS-17, SLS-25, SLS-40 proximity switches and proximity tester for non-contact object detection.
• Shifter & Turn Signal VS shifter and VT turn signal controls for vehicle and equipment applications.
• Industrial Joysticks JST-2 through JST-8 series industrial joysticks with switch and linear Hall Effect output, IP67 sealing, for mobile equipment and machinery control.
• Electronic Throttle Controls TPS-15, TPS-26, TPS-27, TPS-54, TPS-58, TPS-62, TPS-65 series Hall Effect throttle pedals for precise position sensing in vehicle and equipment applications.
• Audio/Visual Signaling Alarm bells, buzzers, signaling lights, signaling tower lights, revolving warning lights, and emergency lights for industrial safety and status indication.
• Load Cells Load cell products for force and weight measurement in industrial applications.
• Ignition Switches IHP/IHM series ignition switches for equipment and vehicle starting systems.
• Hour Meters AC and DC hour meters and machine counters for tracking equipment operating time.
• Terminal Blocks TU1 (15A/300V), TU2 (20A/300V), TU3 (30A/300V), TG3 (30A/600V), TG6 (60A/600V) terminal blocks, TH terminal barriers, TC high current, TB and TK series, and G series grounding busbars.

Quantifiable outcome

• Up to 1,000,000 operations service life for medical foot switches
• +2 more outcomes

Segments7 records

Ideal customer profiles7 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

One partnership is on record.

• HoneywellcoreTechnology or IntegrationSUNS offers drop-in replacement products for discontinued Honeywell switches and sensors. The company maintains extensive cross-reference data for Honeywell EOL (End of Life) parts and provides compatible SUNS alternatives.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SUNS