78 function tester illustrations & vectors are available royalty-free.

This image shows a small handheld voltage tester, often used for electrical safety checks. The device features a bright red LED light at the tip that illuminates when voltage is detected. The tester is housed in a compact, ergonomic body with a slide switch to turn it on and off. The packaging is simple and clearly labeled 'Voltage Tester' in bold letters, indicating its primary function for. Function tester illustrations
This image shows a small handheld voltage tester, often used for electrical safety checks. The device features a bright red LED light at the tip that illuminates when voltage is detected. The tester is housed in a compact, ergonomic body with a slide switch to turn it on and off. The packaging is simple and clearly labeled 'Voltage Tester' in bold letters, indicating its primary function for. Function tester illustrations
The image shows an electrical tester being used to check for live voltage. The device has a red tip and a green light indicating it is functioning properly. The tester is connected to a wire, and the red tip is glowing, suggesting it is detecting electrical current. Function tester illustrations
The image shows an electrical tester being used to check for live voltage. The device has a red tip and a green light indicating it is functioning properly. The tester is connected to a wire, and the red tip is glowing, suggesting it is detecting electrical current. Function tester illustrations
A hand firmly grasps a bright yellow and black electrical voltage tester. The tester has a pointed metal probe and a black wire extending from its lower end. The hand is raised against a plain white background, emphasizing the tool's design and function. Suitable for diagnosing electrical circuits, this type of tester is commonly used by electricians and technicians. Function tester vectors
A hand firmly grasps a bright yellow and black electrical voltage tester. The tester has a pointed metal probe and a black wire extending from its lower end. The hand is raised against a plain white background, emphasizing the tool's design and function. Suitable for diagnosing electrical circuits, this type of tester is commonly used by electricians and technicians. Function tester vectors
Electrical outlet tester with prongs and indicator lights for assessing outlet wiring. Features include status lights for 'Good,' 'Open Ground,' 'Open Hot,' and wiring errors like 'Hot Gnd Rev. ' Compact, handheld design with a rectangular body and defined labeling for guidance. Used for verifying electrical outlet safety and function, helping to diagnose potential wiring issues by displaying specific light patterns. Function tester illustrations
Electrical outlet tester with prongs and indicator lights for assessing outlet wiring. Features include status lights for 'Good,' 'Open Ground,' 'Open Hot,' and wiring errors like 'Hot Gnd Rev. ' Compact, handheld design with a rectangular body and defined labeling for guidance. Used for verifying electrical outlet safety and function, helping to diagnose potential wiring issues by displaying specific light patterns. Function tester illustrations
The a handheld digital multimeter with a black and red body and a green LCD display. The device has multiple buttons on the front, including power, mode, function, and hold buttons. A clear plastic probe cover is attached to the bottom, and the multimeter is set against a plain white background, creating a clean, isolated presentation. Function tester illustrations
The a handheld digital multimeter with a black and red body and a green LCD display. The device has multiple buttons on the front, including power, mode, function, and hold buttons. A clear plastic probe cover is attached to the bottom, and the multimeter is set against a plain white background, creating a clean, isolated presentation. Function tester illustrations
The image showcases a small, handheld voltage tester designed for quick and easy electrical safety checks. This device features a metallic probe for testing connections, a red indicator light to show the presence of voltage, and a button likely used to activate the tester. The label 'voltage tester' is prominently displayed on the body, indicating its primary function for detecting electrical. Function tester illustrations
The image showcases a small, handheld voltage tester designed for quick and easy electrical safety checks. This device features a metallic probe for testing connections, a red indicator light to show the presence of voltage, and a button likely used to activate the tester. The label 'voltage tester' is prominently displayed on the body, indicating its primary function for detecting electrical. Function tester illustrations
Purple multimeter icon featuring a rectangular device with a needle gauge, indicating measurement function. Two probe wires extend from the device, suggesting connectivity for electrical testing or diagnostics. The icon is simple with a stylized design, suitable for representing voltage testing and electronics repair tools. The gadget signifies measurement capability in technical contexts, commonly used by electricians and technicians. The image is set against a white background. Function tester vectors
Purple multimeter icon featuring a rectangular device with a needle gauge, indicating measurement function. Two probe wires extend from the device, suggesting connectivity for electrical testing or diagnostics. The icon is simple with a stylized design, suitable for representing voltage testing and electronics repair tools. The gadget signifies measurement capability in technical contexts, commonly used by electricians and technicians. The image is set against a white background. Function tester vectors
Two digital breathalyzer devices are shown, one a compact keychain model and the other a larger handheld unit. Both display numerical readings on their screens, indicating their function as alcohol testers. These devices are presented isolated on a transparent background. Function tester vectors
Two digital breathalyzer devices are shown, one a compact keychain model and the other a larger handheld unit. Both display numerical readings on their screens, indicating their function as alcohol testers. These devices are presented isolated on a transparent background. Function tester vectors
A handheld digital water quality tester showing salinity reading on LCD display with two metal probes, isolated against plain white studio background with soft shadows and professional product photography lighting. AI-generated. Function tester illustrations
A handheld digital water quality tester showing salinity reading on LCD display with two metal probes, isolated against plain white studio background with soft shadows and professional product photography lighting. AI-generated. Function tester illustrations
A handheld waterproof electronic instrument with LCD screen showing 32. 5 ppt salinity reading, blue and grey casing, three buttons labeled OFF HOLD CAL, probe tip exposed, protective cap removed and placed beside device on white background. AI-generated. Function tester illustrations
A handheld waterproof electronic instrument with LCD screen showing 32. 5 ppt salinity reading, blue and grey casing, three buttons labeled OFF HOLD CAL, probe tip exposed, protective cap removed and placed beside device on white background. AI-generated. Function tester illustrations
Two digital alcohol breathalyzer testers are shown, one larger and one smaller with a keychain attachment. Both devices feature small LCD screens displaying numerical readings, indicating their function as portable alcohol detection devices. They are presented isolated on a transparent background. Function tester vectors
Two digital alcohol breathalyzer testers are shown, one larger and one smaller with a keychain attachment. Both devices feature small LCD screens displaying numerical readings, indicating their function as portable alcohol detection devices. They are presented isolated on a transparent background. Function tester vectors
A comprehensive arrangement of various electrical tools and devices for maintenance, testing, and installation, showcasing a professional workspace on a gray background. Function tester illustrations
A comprehensive arrangement of various electrical tools and devices for maintenance, testing, and installation, showcasing a professional workspace on a gray background. Function tester illustrations
A white and gray handheld digital TDS meter displays a reading of 147 PPM on its blue LCD screen, standing upright next to a clear glass beaker containing water against a plain white background. The device features ON OFF, MODE, and HOLD buttons with a probe at the bottom. This product shot highlights the instruments design and function for water quality testing. AI-generated. Function tester illustrations
A white and gray handheld digital TDS meter displays a reading of 147 PPM on its blue LCD screen, standing upright next to a clear glass beaker containing water against a plain white background. The device features ON OFF, MODE, and HOLD buttons with a probe at the bottom. This product shot highlights the instruments design and function for water quality testing. AI-generated. Function tester illustrations
A yellow digital multimeter with red and black test probes connected, displaying a reading on its screen, isolated on a clean white background for clarity. Function tester illustrations
A yellow digital multimeter with red and black test probes connected, displaying a reading on its screen, isolated on a clean white background for clarity. Function tester illustrations
A close-up studio shot of a handheld digital multimeter featuring a large LCD screen, rotary function dial, and four input jacks labeled 10A, mA, COM, and V. The device has a rugged yellow and black plastic casing with textured grips. Two sets of red and black insulated test leads with metal probes are coiled beside the meter on a clean white surface. The image is an AI-generated. Function tester illustrations
A close-up studio shot of a handheld digital multimeter featuring a large LCD screen, rotary function dial, and four input jacks labeled 10A, mA, COM, and V. The device has a rugged yellow and black plastic casing with textured grips. Two sets of red and black insulated test leads with metal probes are coiled beside the meter on a clean white surface. The image is an AI-generated. Function tester illustrations
A bright yellow handheld digital multimeter featuring a large LCD screen, rotary dial, and multiple function buttons sits on a plain white surface next to a pair of coiled red and black test probes with metal tips. The device includes input jacks labeled COM, V , and mA, along with safety warning text near the ports. The composition is clean and isolated against a neutral background. AI-generated. Function tester illustrations
A bright yellow handheld digital multimeter featuring a large LCD screen, rotary dial, and multiple function buttons sits on a plain white surface next to a pair of coiled red and black test probes with metal tips. The device includes input jacks labeled COM, V , and mA, along with safety warning text near the ports. The composition is clean and isolated against a neutral background. AI-generated. Function tester illustrations
A 3D rendering of a neon test light against a clean white background. The tool features a metallic handle with a red accent and a slender probe. The image is suitable for illustrating electrical work, safety procedures, or tool-related concepts. The minimalist setting emphasizes the tool's design and function. Function tester illustrations
A 3D rendering of a neon test light against a clean white background. The tool features a metallic handle with a red accent and a slender probe. The image is suitable for illustrating electrical work, safety procedures, or tool-related concepts. The minimalist setting emphasizes the tool's design and function. Function tester illustrations
Acoustic light plumb bob measuring groundwater level in an underfloor environment. The device emits light, illuminating the surrounding wet ground. The area appears damp, with a mix of soil and small rocks. The glow highlights the water's surface, reflecting the light and creating a warm ambiance. The plumb bob is cylindrical and partially submerged, suggesting a function of determining water depth. The setting is underground, characterized by earthen textures and uneven ground. Function tester illustrations
Acoustic light plumb bob measuring groundwater level in an underfloor environment. The device emits light, illuminating the surrounding wet ground. The area appears damp, with a mix of soil and small rocks. The glow highlights the water's surface, reflecting the light and creating a warm ambiance. The plumb bob is cylindrical and partially submerged, suggesting a function of determining water depth. The setting is underground, characterized by earthen textures and uneven ground. Function tester illustrations
The image features a multimeter being used to test a circuit board and a battery. The silhouette highlights the technician's hand and the tool, showcasing its role as a diagnostic device essential for electronic repair and maintenance. The focus on the multimeter emphasizes its function in battery voltage assessment and component testing. This visual representation is generated with AI. Function tester vectors
The image features a multimeter being used to test a circuit board and a battery. The silhouette highlights the technician's hand and the tool, showcasing its role as a diagnostic device essential for electronic repair and maintenance. The focus on the multimeter emphasizes its function in battery voltage assessment and component testing. This visual representation is generated with AI. Function tester vectors
Discover the precision and convenience of this analog multimeter, designed for both professionals and DIY enthusiasts. Featuring an auto-ranging function, this device simplifies measurements by automatically adjusting to the correct range for voltage, current, and resistance. The clear display and durable build ensure accurate readings for a variety of electrical tasks. Ideal for troubleshooting. Function tester vectors
Discover the precision and convenience of this analog multimeter, designed for both professionals and DIY enthusiasts. Featuring an auto-ranging function, this device simplifies measurements by automatically adjusting to the correct range for voltage, current, and resistance. The clear display and durable build ensure accurate readings for a variety of electrical tasks. Ideal for troubleshooting. Function tester vectors
A high-angle studio shot of a vibrant yellow digital multimeter standing upright on a kickstand. The device features a clear LCD screen displaying numbers, a central rotary dial for function selection, and various input ports at the base. Red and black test leads are plugged into the device, with the probes held upright next to the unit, highlighting the tool's use in electrical testing, voltage. Function tester illustrations
A high-angle studio shot of a vibrant yellow digital multimeter standing upright on a kickstand. The device features a clear LCD screen displaying numbers, a central rotary dial for function selection, and various input ports at the base. Red and black test leads are plugged into the device, with the probes held upright next to the unit, highlighting the tool's use in electrical testing, voltage. Function tester illustrations
A high-angle studio shot of a vibrant yellow digital multimeter standing upright on a kickstand. The device features a clear LCD screen displaying numbers, a central rotary dial for function selection, and various input ports at the base. Red and black test leads are plugged into the device, with the probes held upright next to the unit, highlighting the tool's use in electrical testing, voltage. Function tester illustrations
A high-angle studio shot of a vibrant yellow digital multimeter standing upright on a kickstand. The device features a clear LCD screen displaying numbers, a central rotary dial for function selection, and various input ports at the base. Red and black test leads are plugged into the device, with the probes held upright next to the unit, highlighting the tool's use in electrical testing, voltage. Function tester illustrations
Hands holding a variety of electrical and networking hand tools against a white background. From left to right: pliers with rubber grips, a blue-handled precision screwdriver, wire strippers with ergonomic grips, a yellow network cable crimper, a voltage tester with an orange grip, and a digital multimeter with a red and black test lead. Each tool serves a specific function in electrical or networking tasks, displaying diversity in tool design and purpose. Function tester vectors
Hands holding a variety of electrical and networking hand tools against a white background. From left to right: pliers with rubber grips, a blue-handled precision screwdriver, wire strippers with ergonomic grips, a yellow network cable crimper, a voltage tester with an orange grip, and a digital multimeter with a red and black test lead. Each tool serves a specific function in electrical or networking tasks, displaying diversity in tool design and purpose. Function tester vectors
Factory acceptance test for electrical control and protection panel: Electrical engineer rechecks Auto voltage regulator setting before function testing. Function tester illustrations
Factory acceptance test for electrical control and protection panel: Electrical engineer rechecks Auto voltage regulator setting before function testing. Function tester illustrations
Team Lead on Speech Bubble. Cartoon Illustration of Shrieking Loudspeaker. Advertising Concept. Business Concept. Bullhorn with Inscription Team Lead. Cartoon Illustration on Green Chalkboard. Function tester illustrations
Team Lead on Speech Bubble. Cartoon Illustration of Shrieking Loudspeaker. Advertising Concept. Business Concept. Bullhorn with Inscription Team Lead. Cartoon Illustration on Green Chalkboard. Function tester illustrations
Corona virus. dangers for the world. abstract vector illustration. many uses for technology mobile wallpaper, mobile backgrounds, book, covers, screen savers, web page, landscapes, birthday card, greeting cards, function card, letter head etc. Function tester vectors
Corona virus. dangers for the world. abstract vector illustration. many uses for technology mobile wallpaper, mobile backgrounds, book, covers, screen savers, web page, landscapes, birthday card, greeting cards, function card, letter head etc. Function tester vectors
Electrical engineers performing maintenance on a power generator, using laptops and diagnostic tools, critical infrastructure setting. Generative AI. Function tester illustrations
Electrical engineers performing maintenance on a power generator, using laptops and diagnostic tools, critical infrastructure setting. Generative AI. Function tester illustrations
Functional testing technique web banner or landing page. Software testing methodology. IT specialist searching for bugs in code. Website and application development. Flat vector illustration. Function tester vectors
Functional testing technique web banner or landing page. Software testing methodology. IT specialist searching for bugs in code. Website and application development. Flat vector illustration. Function tester vectors
Professional digital multimeter tool illustration for electronic testing and diagnostic of electrical equipment. With precision measurement and analysis. Function tester vectors
Professional digital multimeter tool illustration for electronic testing and diagnostic of electrical equipment. With precision measurement and analysis. Function tester vectors
Factory acceptance test (FAT) for electrical control and protection panel: The engineer rechecks the protection relay setting before the current injection test. Function tester illustrations
Factory acceptance test (FAT) for electrical control and protection panel: The engineer rechecks the protection relay setting before the current injection test. Function tester illustrations