4 Best Insulation Tester Reviews – (Extech 380260 & Hioki IR4056)

1: Insulation Tester 50/100/250/500/1000V

Check Latest Price


  • Part Number: eM870M
  • Item Weight: 2.33 pounds
  • Package Dimensions: 9.8*7.2*3.2 inches
  • Item model number: eM870M
  • Batteries: 6AAA batteries required. (included)
  • Material: Plastic
  • Batteries included: yes
  • Batteries required?: yes
  • Batteries cell type: Alkaline
  • Description pile :AAA

Product Overview:

This is an exclusive Insulation tester wherein you have the Megohmmeter and the multimeter combined into an instrument.

This is a precision instrument. Insulation tester tests how much resistance is there in the circuit or the electrical system.

Along with measuring the resistance it also measures the amount of current flowing through the system.

This device is a measures resistance from 50,000ohms to 2gigaohms with test voltages of 50,100,250,500,1000v.

It has the capability to save battery.

It has the auto power off the system. It comes in a compact package which includes one thermocouple probe, two sets of test leads, alligator clips, 6 AAA batteries and a manual.

The whole thing becomes easy to carry with a case provided to the customer.

Digital Insulation tester the best way to perform an insulation test is after running the compressor if possible.


It has a big LCD screen which lets you know the test voltage results and insulation resistance.eM870M Insulator tester is rated for 1000 CAT III resistance. It comes with 10 years warranty.


If the user manual information is read properly and the instructions are followed then there are no such cons to the device in particular.


The more the insulation lesser will be the current and vice versa. Insulation capacity of the system deteriorates over time which in turn might lead to system breakdown.

Therefore regular maintenance is required and digital insulation tester plays a great role in it.

2: REED Instruments R5600 Insulation Tester and Multimeter (Megohmmeter)

Check Latest Price


  • Item Depth: 50 millimeters
  • Item Weight: 2.2 pounds
  • Length: 200 millimeters
  • Model Number: R5600
  • Number of items: 1
  • Part Number: R5600
  • Power Source: 6*1.5v Aa battery
  • Specification Met: certified frustration-free
  • Style: standard
  • Voltage: 1000 volts
  • Width: 92 millimeters
  • Brand Name: REED instruments

Product overview:

REED R5600 Insulation Tester is a great device to measure insulation resistance.

It is suitable for test voltage combinations like 250v, 500v, 1000v. The readings are easier to read with the dual display and a backlight.R5600 tester measures 200mA test current.

This is not only for the normal current but for the continuity range as well.R5600 tester also measures 1mA test current for megaohm range at rated voltage.

The whole thing becomes easy to carry with a case provided to the customer. The best way to perform the insulation test is after running the compressor if possible.

Also, all the compressors need to be replaced.

If possible just replace the entire bank. It comes with test leads and with removable alligator clips which are helpful in a press fit.

The whole unit comes with a remote probe which can be either plugged into the voltage side, voltage insulation side of the resistance side to do the testing on probing whatever device it is that want to test, and then pressing the test button to complete the test or to perform the test.

R5600 tester start by turning the device on the unit will appear on the LCD as it will measure both the AC/DC up to 600 volts auto-sensing and then it also has LPF.

LPF or low pass filter is functionally exactly the same as on the tight side series of clamps which have the HFR (high-frequency rejection) which ignores any frequencies above about 300 hertz to give you much more accurate measurements.

In the presence of higher frequencies, you would find around things such as high-frequency drives as one such example so you can toggle that into the LPF(low pass filter)on or off.

Then we have ohms. So to measure ohms we would put the lead in the ohm selection on terminal we would then short out the leads and we and we would press the test button and we can see the resistance.


It comes with a durable plastic case. With this practical case, this device is a blessing to measure insulation or detect any machine breakdown.


At times the readings get fluctuated due to lack of knowledge on the part of the user. Therefore it becomes necessary to read the user manual properly.


For anyone who knows how to use the R5600 tester, it is very easy to detect the above-mentioned range of power failures. REED R5600 Insulation Tester is a great device to measure insulation resistance.

3: Extech 380260 Autoranging Digital Insulation Tester

Check Latest Price


  • Part Number: EXT380260
  • Item Weight: 2.2 pounds
  • Product Dimensions    :7.8 x 1.9 x 3.6 inches
  • Item model number: 380260
  • Batteries: 6 AA batteries required. (included)
  • Size: 1
  • Color: orange and green
  • Style: Digital
  • Material: ABS
  • Power Source: corded-electric
  • Item Package Quantity: 1
  • Number Of Pieces: 1
  • Certification:(unset)
  • Special Features: portable
  • Batteries Included: yes
  • Batteries Required: yes
  • Battery Cell Type: Alkaline
  • Warranty Description: one-year parts and description

Product overview:

Extech 380260 is an auto-ranging Digital insulation tester/meg-ohmmeter. Extech 380260 is designed to measure insulation resistance up to 2000M ohm.

This works pretty easy for test voltages 250v, 500v, 1000vDC. It has a large LCD with a backlight. Extech 380260 tester comes with heavy-duty test leads, hanging strap, alligator clip, hard case, 6 AAA batteries.

Extech 380260 tester can give maximum resolution up to 0.1M ohm. It also comes with the fantastic feature of automatic discharge at the end of the test.

Extech multimeter reviews are so positive that once the customer sees the reviews the customer knows about the product and its capabilities straight away.


The large LCD with the dual-display simultaneously displays test voltage output and insulation resistance. It also has a lock power system for hands-free operation.


It can only give the accuracy i.e the basic accuracy of plus-minus 3% on the scale of plus minus5%.


Extech 380260 tester makes your insulation task a lot easier for you with its features and compact packaging.

4: Hioki IR4056-20 Multimeter Insulation Electrical Test Equipment – AC/DC

Check Latest Price


  • Part Number: IR4056-20
  • Item Weight: 1.75 pounds
  • Package Dimensions: 7.3 x 6.5 x 2.2 inches
  • Material: Plastic
  • Item Package Quantity: 1

Product overview:

Hioki IR4056-20 Multi-meter Insulation Electrical Tester is basically a revolutionary product which you can purchase at a revolutionary price.

This device is indigenously designed which provides you with many features like easy to read display.

It comes with a sliding cover for better storage, it has the response time at PASS/ FAIL decision of 0.8 seconds. Hioki IR4056-20 Multimeter Insulation Electrical Tester is drop-proof onto concrete from 1 m (3.28 feet).

The product has a bright LED which is a luminous LCD, moreover, it comes with test lead which has a bright LED lamp to illuminate near hand (Option L9788-11 or L9788-10).

One can also have the continuity check with the help of 200 mA testing built-in AC/DC voltage meter, useful for testing electric power vehicles and solar power generation systems.

You can measure between the ground and secondary line, also you can measure all the circuits.

It performs the double-action function from selecting a range to finalizing the settings.

Also, the comparative function is set with the COMP key. It has analog measurements using the bar graph display. FAIL/PASS results are indicated with sound and light.

It also has magnet adapters for simple connections.

Hioki insulator test prices are so affordable that you can easily purchase it and with some warranty period.


It also comes with safety systems for high voltage. This can be used for a wide range of applications.

It enables you with five range testing voltages 50v/100MO to 1000v/4000MO. It gives you stable readings. Hioki IR4056-20 Multimeter also gives you medium to high-speed digital readings.

It is useful for various kinds of readings like testing electric power vehicles, solar power generation systems.


It demands you to work safely and in accordance with facility management rules and regulations


This is one of the best products in tools and home maintenance. It comes with comparative functions. Hioki IR4056-20 Multimeter provides you with a safe design for maximum peace of mind.

For the actual measurements in the field, one needs to turn off the distribution panel then open the distribution panel and you are free to take the readings.

All thanks to the screen backlight and LED-equipped test lead, you can work safely and reliably even in the dark locations.

Also because of the comparative indicator on test lead with remote control switch, judgment triggered sounds, and screen display it becomes a lot easier to perform operations.

Leave a Comment

Your email address will not be published. Required fields are marked *