To ensure your devices can operate safely in the conditions your workforce faces, Comark custom engineers and manufactures products with the appropriate certifications for your specific environmental needs. Comark is certified to ISO 9001:2015 and an ITAR compliant registered manufacturer. If you have a condition that is not covered here, let us know so we can secure the certifications needed to keep you successful in any extreme or hazardous environment.


FCC Marking (U.S.) This certifies that the electromagnetic interference (EMI) from the device is under limits approved by the Federal Communications Commission (FCC). The FCC marking is for any product that can emit more than 9 kHz. These can include power adapters, IT equipment, Bluetooth devices, wireless local area networking equipment, remote control transmitters, and other devices. These are tested to see if they may cause interference with other equipment.
UL 60950 (International) This specification from Underwriters Laboratories (UL) applies to AC/DC power supplies and DC/DC converters for telecommunication terminals, network infrastructure, and related equipment. The UL 60950 standard sets out design rules for insulation materials and safety spacing’s and setting AC mains over-voltage level with the intention of reducing risks of fire, electric shock, or injury.

Fire & Life Safety

ATEX Zone-2/22 approval certificate (EU) This classification for Zone 2 refers to safety in settings such as a chemical or petrochemical plant where there is a larger risk of explosion during routine operations. Zone 22 refers to settings where dust is a factor in combustion, such as food processing plants, where powdered food substances that are easily ground may ignite more easily. The standard qualifies that an explosion is not likely to occur for equipment under this designation but, if it does, it will be for a short period of time only.
CE Marking Compliance (EU) This marking is a self-declaration that products conform to European standards related to health, safety and environmental legislation that aims to ensure products will not endanger life or property. Products where the CE marking is relevant include medical devices, construction products, machinery, electrical equipment, personal protective equipment, radio and telecommunications terminal equipment, equipment and protective systems for use in explosive atmospheres, non-automatic weighing instruments, and toys, among others.
EN50155 Certification (International) This standard requires systems on rolling stock (typically railways) be able to operate between -40°C and +85°C and adheres to shock and vibration requirements, power supply requirements, electromagnetic compatibility requirements, and noise levels. This means that systems must implement design practices, such as environmental testing, electrical testing, and vibration testing, that guarantee these locomotive systems will operate 24/7 for 30 years without failure.

IECEx International Safety Compliance (International)
The IECEx standard generally applies to equipment found in areas where flammable particles are present, such as manufacturing or processing settings such as gas stations, oil refineries, rigs and processing plants, chemical treatment facilities, paper and textile factories, grain storage areas, woodworking and metal surface grinding operations. To obtain this certification, products must undergo a monitored process by the International Electrotechnical Commission (IEC) to ensure that they meet safety requirements for these hazardous environments.

IP65/66 NEMA (International) Ingress Protection (IP) ratings are displayed as a two-digit number. The first digit reflects the level of protection against dust; the second digit reflects the level of protection against liquids. IP65 refers to sealing effectiveness levels provided by an electrical enclosure that are “dust tight” and protected against water projected from a nozzle.
NFPA (72 (U.S.) UL 864 This specification is related to threat notifications for events such as fire, weather emergencies, terrorist events, biological, chemical, and nuclear emergencies, among others. The UL 864 standard was initially established to be the “Standard for Control Units and Accessories for Fire Alarm Systems”, but today generally follows changes in National Fire Protection Association (NFPA) 72. Chapters within NFPA 72 relevant to UL 864 cover a variety of fire safety aspects, and greatly influence fire safety product design relating to aspects like system alarm response time, notification types (visible and audible notifications), interconnected device compatibility, software integrity, and others.
UL/cUL 508/UL 61010 (Equivalent to IEC 61010) (US & Canada) UL 61010 is a series of safety criteria for industrial controls such as test and measurement, laboratory, and process control equipment of 1500 volts or less used to start, stop, regulate, control, or protect electric motors. Performance requirements are based on hazards one could encounter while using the product, such as electric shock and burn, mechanical hazards, effects of mechanical stresses, fluid pressure and radiation, excessive temperature, and spread of fire from the equipment. This certification is determined by inspection, type tests, routine tests, and risk assessment.
UC/cUL Class I Div 2 Hazardous Locations (ANSI/ISA 12.12.01) (US & Canada) This certification ensures safety in specific areas associated with ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors that are not likely to exist under normal operating conditions. It is especially relevant to the oil and gas/energy sector as well as other hazardous environments.
UL/cUL 60601 Medical Compliance (U.S. & Canada, equivalent to IEC 60601 in Europe) This certification refers to general requirements for safety for medical electrical equipment. It provides detailed requirements for medical device labeling for the user related to safe installation, use, storage, servicing, and maintenance. It requires that product instruction explains safety-critical information such as electrical use that may not be otherwise obvious. This standard pertains to product labeling, including durability of markings, accompanying documents, instructions for use, instructions for cleaning, sterilization, and maintenance, environmental information, replacement parts information and circuit diagrams, and transportation and storage information.


ABS Type Approval based on IEC 60945 (U.S.) This certification from American Bureau of Shipping (ABS) indicates that specific systems for military and marine offshore use have undergone design verification and manufacturing assessment to ensure they can withstand a maritime environment. This includes having moisture and corrosion resistance, shock and vibration resistance, and other features that make the product well suited for a marine environment.
MIL-STD-901-D Shock (U.S.) This U.S. government military specification (also called a “MilSpec”) seeks to prevent high-impact mechanical shock damage to equipment mounted on ships. It helps evaluate whether equipment mounted in a ship will survive a conflict scenario where large transient shocks are created generated by collisions or explosions. This standard confirms that essential equipment can shut down as a result of an initial shock but is able to automatically restart without any repairs. The standard also specifies that non-essential equipment can fail in a shock event but does not create a hazard to onboard personnel or other, essential equipment.
MIL-STD-167 Vibration (U.S.) The U.S. government military specification, or MilSpec, 167 Vibration designates that certified systems will not succumb to structural and functional failure during shipping, transport, and operation. This standard specifies levels of resistance to internally or environmentally generated vibration, including reciprocating machinery or lateral and longitudinal vibrations of propulsion system and shafting. These might come from propeller vibrations, when a ship’s speed and direction changes, and in rough seas.


MIL-STD-461 EMI/EMC (U.S.) Designed to ensure communications systems can operate in proximity to electrical and electronic systems, this U.S. government military specification outlines criteria for electromagnetic interference (EMI) and electromagnetic compatibility (EMC).
MIL-810-G – Environmental Engineering Considerations and Laboratory Tests (U.S.) The MIL-STD-810 standard (with the current iteration known as version G) is maintained by a Tri-Service partnership that includes the United States Air Force, Army, and Navy. This standard addresses a broad range of environmental conditions that include low pressure for altitude testing; exposure to high and low temperatures plus temperature shock (both operating and in storage); rain (including wind-blown and freezing rain); humidity, fungus, salt fog for rust testing; sand and dust exposure; explosive atmosphere; leakage; acceleration; shock and transport shock; gunfire vibration; and random vibration.