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checker Product List and Ranking from 211 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.

checker Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.

  1. ミタチ産業 Aichi//Trading company/Wholesale
  2. null/null
  3. JFEプラントエンジ Tokyo//others
  4. 4 null/null
  5. 4 ジェーディーエルエンジニアリング Kanagawa//Consumer Electronics
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checker Product ranking

Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.

  1. Alcohol Check Cloud Management "Alporter" ミタチ産業
  2. [Poka-Yoke Example] Prevention of Half-Locking of Connectors
  3. Digital Oil Checker "Wendy" JFEプラントエンジ
  4. 4 Sewage Pipe Inspection Checker "Toru-kun" ジェーディーエルエンジニアリング
  5. 5 High-precision mass inspection machine Weight Checker DACS-GN

checker Product List

331～345 item / All 430 items

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HIROSE Relay Checker [Model PRT-2010X]

HIROSE Relay Checker [Model PRT-2010X]

For thermal power plants, chemical plants, large computers, space equipment, and more!

The "PRT-2010X model" is a relay checker that guarantees relay performance. In addition to obtaining accurate data on relay performance, if implemented in incoming inspections, it automatically determines the quality of incoming relays and prevents troubles in advance. 【Benefits of Use】 ■ Accurate data management ■ Active in incoming inspections ■ Aging effect ■ Screening tests possible ■ Evaluation of maintenance effects ■ Utilized as a fault diagnostic tool ■ Automatic data recording *For more details, please refer to the PDF materials or feel free to contact us.

  • relay
  • Other measurement, recording and measuring instruments

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HIROSE Relay Checker [Model MRT-4040]

HIROSE Relay Checker [Model MRT-4040]

For thermal power plants, chemical plants, large computers, and space equipment!

The "MRT-4040 model" is a relay checker with a built-in external printer (10 inches) that guarantees relay performance. In addition to obtaining accurate data on relay performance, if implemented in incoming inspections, it automatically determines the quality of incoming relays and prevents troubles in advance. 【Benefits of Use】 ■ Accurate data management ■ Active in incoming inspections ■ Aging effect ■ Screening tests possible ■ Evaluate maintenance effects ■ Used as a fault diagnostic tool ■ Automatic data recording *For more details, please refer to the PDF materials or feel free to contact us.

  • relay
  • Other measurement, recording and measuring instruments

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IV Output Voltage Checker 'SB5317-01'

IV Output Voltage Checker 'SB5317-01'

It is possible to judge deterioration and prevent malfunctions in advance! Operates at IV output voltage.

We would like to introduce our IV output voltage checker, the 'SB5317-01'. This device continuously monitors the output voltage and frequency of the power converter IV, providing an alarm output if the voltage deviates from a threshold or if the frequency changes significantly. This allows for the assessment of deterioration and helps prevent failures before they occur. Additionally, the 7-segment display allows for real-time monitoring of voltage and frequency. 【Specifications and Performance (Partial)】 ■ Rated Voltage: AC200V 400Hz (Operating Range AC160V～250V 200～600Hz) ■ Current Consumption: 5mA or less (at rated voltage) ■ Alarm Output Contact Capacity: DC30V, 2A / AC125V, 0.5A ■ Alarm Voltage: Can be set to either 170V, 180V, or 190V ■ Voltage Measurement Accuracy: ±5% or less *For more details, please download the PDF or feel free to contact us.

  • Voltage Meter

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Earth Checker

Earth Checker

Since it has an F-shaped relay design, it can be installed in a space-saving manner! It forms an alarm contact when it detects insulation failure.

We offer an "Earth Checker" that helps prevent failures by continuously monitoring the insulation resistance between the ground and the signal power supply and level crossing power supply as monitoring lines. The alarm contact configuration and operation timing can correspond to each of the level crossing failure detectors N1, centralized automatic reset field devices, and electronic level crossing failure detectors. We conduct development design and manufacturing (prototype mass production) utilizing the technology of LED selection and circuit board layout cultivated through railway signal and display devices. We can solve your problems such as "I want this kind of alarm" or "Can’t we make something like this with LEDs?" so please feel free to contact us. 【Features】 ■ When the insulation resistance of the monitoring line decreases and insulation failure is detected, the alarm contact is configured. ■ The F-type relay shape allows for space-saving and easy installation (the 5-circuit type uses an A-type relay shape). ■ The alarm contact configuration and operation timing can correspond to each of the level crossing failure detectors N1, centralized automatic reset field devices, and electronic level crossing failure detectors. *For more details, please download the PDF or feel free to contact us.

  • Other safety equipment

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Earth Checker (with fault detection function)

Earth Checker (with fault detection function)

Capable of storing insulation resistance values during normal monitoring, earth detection, and earth recovery.

This product is an "Earth Checker" that helps prevent failures by continuously monitoring the insulation resistance between the ground and the signal power and level crossing power monitoring lines. It has a built-in fault detection function that continuously monitors the integrity of the internal circuit and outputs self-failure information when an anomaly is detected. This reduces the risk of overlooking abnormalities in the line due to equipment failures. Our company conducts development design and manufacturing (prototype mass production) utilizing the technology of selecting LEDs and circuit board layout cultivated through railway signal and display devices. We can solve your problems, such as "I want an alarm like this" or "Can you make something like this with LEDs?" so please feel free to contact us. 【Features】 ■ It can store insulation resistance values during normal monitoring, ground detection, and ground recovery, and the stored data can be read using dedicated software. ■ The F-shaped relay design allows for space-saving and easy installation. *For more details, please download the PDF or feel free to contact us.

  • Other safety equipment

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FLC-103: Oxygen Flow Meter Checker

FLC-103: Oxygen Flow Meter Checker

Flow measurement and diagnosis of oxygen flow meters.

Oxygen flow meters are used almost daily in medical institutions. However, in the case of flow-type meters, their accuracy decreases over time due to wear of the float and deterioration of seals, among other structural reasons. Additionally, with dial-type meters, it is unclear whether the set amount of oxygen is actually being delivered, as there may be discrepancies between the dial reading and the actual oxygen flow due to damage from impacts or aging. For these reasons, oxygen flow meters require regular inspections. However, when medical institutions attempt to verify the accuracy of their oxygen flow meters themselves, they need various equipment (pressure regulators, tubes, filters, flow meters, etc.), which makes the inspection process inefficient. Furthermore, depending on the size of the institution, they may have hundreds of devices, making self-inspection challenging. The oxygen flow meter checker is a product that consolidates the necessary equipment for inspecting oxygen flow meters into a compact form. It is an ideal product for those considering checking their oxygen flow meters. We also offer demo units for loan. Please feel free to contact us.

  • Other measurement, recording and measuring instruments

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[Example] Grease Checker

[Example] Grease Checker

Easily check the lubrication supply condition to the bearings! This also helps eliminate human error.

We would like to introduce a case study of the "Grease Checker" handled by Hirokazu Corporation. In a dual-line system, even if there is damage to the piping between the distribution valve and the bearing, the distribution valve operates normally, making it difficult to detect abnormalities. By installing the Grease Checker close to the bearing, the grease supply status to the bearing can be easily confirmed at a glance. [Case Overview] ■ Introduced Product: Grease Checker ■ After Installation - The Grease Checker was installed close to the bearing, and the grease pump was operated. - The indicator pops out for normal areas, while it remains down for abnormal areas, making it easy to identify the problematic locations. *For more details, please refer to the PDF document or feel free to contact us.

  • Lubricants
  • others

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Plasma checker

Plasma checker

The effects of plasma treatment are clear at a glance!

Visualizing the surface modification effects of plasma that are not visible to the eye! Simply place a sheet on the area you want to measure and irradiate it with plasma! The color changes when exposed to plasma! For more details, please contact us.

  • Other inspection equipment and devices
  • Other consumables

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Handy N/S Checker "NSC-01"

Handy N/S Checker "NSC-01"

If it's a simple check, this one is enough! It's suitable for inspecting products after embedding and for research or teaching materials related to various magnetic properties.

The "NSC-01" is a handy N/S checker that can instantly determine and inspect the polarity of magnets. It features a pen-shaped design that is convenient and easy to use for inspectors and operators. The polarity detection results are indicated by a lamp display and also signaled audibly. It is ideal for checking the polarity when incorporating magnets as components, inspecting products after assembly, and for various studies and educational purposes related to magnetism. 【Features】 ■ One unit is sufficient for simple checks ■ Convenient and easy-to-use pen-shaped design ■ Polarity detection results are indicated by a lamp display and an audible signal *For more details, please refer to the PDF document or feel free to contact us.

  • Other inspection equipment and devices
  • Other work tools

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Alcohol Checker 'SKJ-AL001JP'

Alcohol Checker 'SKJ-AL001JP'

Reusable up to 2500 times! A compact and highly portable alcohol tester.

The 『SKJ-AL001JP』 is an alcohol checker equipped with a highly durable sensor that can be used repeatedly up to 2500 times. Simply blow into it from about 1 cm away from the sensor part for approximately 4 to 5 seconds for easy measurement. It features a convenient backlit digital LCD that can be used effectively even in dark conditions or at night. It uses readily available AA batteries, making it easy to use anytime and anywhere, whether you are out or on a business trip. 【Features】 ■ Easy measurement by just blowing into it ■ Equipped with a sensor that can be used repeatedly ■ Digital LCD with backlight ■ Uses AA batteries *For more details, please refer to the PDF document or feel free to contact us.

  • Other measurement, recording and measuring instruments

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Portable Alcohol Checker 'HDL-J8'

Portable Alcohol Checker 'HDL-J8'

Measurement completed in about 20 seconds! An alcohol checker compatible with commercially available straws.

The "HDL-J8" is a portable alcohol checker that can measure the alcohol concentration in breath simply by blowing into it. The measurement results are displayed in three colors: red, yellow, and green. It features a highly visible 7-segment LED display. Equipped with a memory function, it can record up to 50 measurement results. With a cap for cleanliness and a smart design, it is also convenient to carry. 【Features】 ■ Measurement completed in about 20 seconds (preheating about 10 seconds, blowing for 5-10 seconds) ■ Measurement results displayed in three colors ■ Highly visible 7-segment LED display ■ Convenient to carry ■ Compatible with commercially available straws (compatible with 6mm straws) *For more details, please refer to the PDF document or feel free to contact us.

  • Other measurement, recording and measuring instruments

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Alcohol checker

Alcohol checker

A lineup featuring the compact and highly portable "Alcohol Checker SKJ"!

We would like to introduce the "Alcohol Checker" handled by Showa Trading Company. Starting with the "Alcohol Checker SKJ," which allows for easy measurement by blowing into it and is compact and highly portable, we also offer the "Alcohol Sensor AN-S094," which enables data transfer and management to your smartphone via Bluetooth, and the "Portable Alcohol Checker HDL-J8." Please choose according to your needs. 【Product Lineup】 ■ Alcohol Checker SKJ ■ Alcohol Sensor AN-S094 ■ Portable Alcohol Checker HDL-J8 *For more details, please refer to the PDF document or feel free to contact us.

  • Other measurement, recording and measuring instruments

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Alcohol Checker <Immediate Delivery Product>

Alcohol Checker <Immediate Delivery Product>

Introducing products like "AL-LOG" and "HDL-J8"! We also present member products and certified items from the Alcohol Detector Association.

We would like to introduce our "Alcohol Checker" products. We offer the alcohol detection system "AL-LOG," which features a hygienic and economical replaceable sensor unit, as well as the "SKJ-AL001JP," which allows for easy measurement by simply blowing into it. Additionally, we have the "AN-S094," which enables data transfer and management via Bluetooth connection to a smartphone, and the "HDL-J8," which completes measurements in about 20 seconds. 【Features】 ＜Alcohol Detection System: AL-LOG＞ ■ Personal authentication using a driver's license ■ Hygienic and economical replaceable sensor unit ＜Alcohol Checker: SKJ-AL001JP＞ ■ Uses a highly durable semiconductor gas sensor ■ Equipped with a backlit digital LCD for use in dark places *For more details, please refer to the PDF document or feel free to contact us.

  • Other measurement, recording and measuring instruments

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