--- product_id: 66364272 title: "BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display" brand: "btmeter" price: "449.60 DT" currency: TND in_stock: true reviews_count: 9 category: "Btmeter" url: https://www.desertcart.tn/products/66364272-btmeter-bt-6688b-megohmmeter-200-gig-ohm-digital-insulation-resistance store_origin: TN region: Tunisia --- # Up to 5kV test voltage 0.1MΩ to 200GΩ range Battery powered, portable BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display **Brand:** btmeter **Price:** 449.60 DT **Availability:** ✅ In Stock ## Summary > ⚡ Power up your precision — test smarter, not harder! ## Quick Answers - **What is this?** BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display by btmeter - **How much does it cost?** 449.60 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/66364272-btmeter-bt-6688b-megohmmeter-200-gig-ohm-digital-insulation-resistance) ## Best For - btmeter enthusiasts ## Why This Product - Trusted btmeter brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Complies with IEC-1010 double insulation and overvoltage category II standards, keeping you protected during high-voltage tests. - • **Reliable Support:** Backed by 24/7 professional tech support and a 1-year warranty, so you’re never left in the dark. - • **Voltage Flexibility:** Select from six test voltages (100V to 5000V) to match any high-voltage equipment testing scenario with confidence. - • **User-Friendly Design:** Auto-ranging with a backlit display and anti-slip protective case for effortless, safe operation in any environment. - • **Precision Meets Power:** Measures insulation resistance from 0.1MΩ to a staggering 200GΩ with ±3% accuracy, ensuring your diagnostics are always on point. ## Overview The BTMETER BT-6688B is a professional-grade digital megohmmeter designed for high-accuracy insulation resistance testing up to 200GΩ. Featuring selectable test voltages from 100V to 5000V, auto-ranging capability, and a backlit display, it combines versatility with ease of use. Built with safety standards IEC-1010 and overvoltage category II compliance, it ensures reliable and secure operation. Ideal for electrical professionals testing transformers, motors, cables, and more, it comes with robust protective casing and dedicated 24/7 tech support. ## Description Product description BTMETER BT-6688B Digital Megohmmeter ADD Features Data Hold Backlight Display Low battery reminder Anti-drop protective case Red High Volt Indicator light Insulation resistance TEST/STOP button 1999 Counts LCD backlight Auto ranging megohmmeter HV red Indication Lamp Light Professional Insulation resistance tester features with 5kV 200G High insulation resistance measurement reach up to 200G ohms Wide output test voltage can be selected from 100V/250V/500V/1000V/2500V/5000V. Comes with a fabric case for storage everything The ideal megameter for testing electrical insulation on under floor heat cables, Earthing Shoes. Suitable for measuring the insulation resistance of various electrical equipment and insulating materials such as transformers, motors, cables, switches, electrical appliances, etc. ACV AC Voltage: 750V Frequency range: 40~400Hz Insulation resistance: 1M Ω~200G Ω Accuracy: ±2% of reading + 5 digits Testing Voltage: 500V/1000V/ 2500V/5000V Here’s what they say about BT-6688B Insulation Resistance Meters - “Used it to test under floor heat cables" - “Meter is rather heavy, as it should be." - “ it has actual resistance reading instead of just LED light showing” - “A low cost tester reaching extreme 200 Gig Ohm and 5000 Volt.” - “Clear large display, backlight,anti slippery housing great for outdoor testing.” - “Easy to use, very heavy duty high voltage cables included.” - “Display actual resistance reading instead of just LED light showing” Large Backlight Display Large backlit LCD display for easy reading in dim area. Features with quakeproof, dust proof and drop proof, fit for outdoor working environment. Multi-purpose Megohmmeter Tests insulation resistance up to 5,000 volts in increments. Suitable for measuring insulation resistance on electrical machines, materials such as: motor, cable, ground rod, earthing shoes, insulation tapes, tools. Heating Floor Cables Tester Before installing electric heating you need to check insulation of the wire with a meg-ohmmeter. IEC-1010 double insulation, overvoltage category II safety standards rated. 6x1.5V Batteries Included Separate the orange protective cover from the body and open the back cover with a screwdriver to replace the battery and safety tube. Review: Does it's job and does it well. - I needed a megohmmeter when installing Ditra heated floors and came across this when looking for one. The unit is well built, easy to use and did exactly what I needed it to at a fair price Review: Great meter once you get a working one; very accurate - The first unit I ordered had a miss-fitting negative lead that simply rattled around in the socket. I returned that one and received a second unit at no additional charge. One of the included batteries was leaking and measured zero; additionally it produced intermittent readings. desertcart refunded me for the second unit but told me to keep it. I decided to see if I could repair it rather than re-ordering another. I took it apart and found a loose solder joint which I fixed. The unit now works perfectly. I purchased it in order to verify the resistance of some high-gigohm resistors; the meter confirms their rated values within 1%. I've also tested it against various insulation materials for resistance with good results. A very nice meter if you get one that works! ## Features - ✅【High Insulation Resistance Tester】Digital Autoranging Megohmeter measures high insulation resistance 0.1M～200G ohms with accuracy ± 3% (+ 5 digits) - ✅【Wider Testing Voltage】The output testing voltage can be selected from 100V/250V/500V/1000V/2500V/5000V. This Insulation Resistance Tester comes with a non-slip and anti-fall protective case which is insulative. - ✅【Safe and Reliable Mega Ohmmeter】 IEC-1010 double insulation, overvoltage category Ⅱ safety standard rated. During any rated voltage measurement, if the measured resistance is less than 5M ohms, the measurement time should not exceed 10 seconds. - ✅【Electric Insulativity Test Checker】 This Megohm meter can also measures AC high volt 1V~750V, Frequency Range:40Hz~400Hz,with high voltage measurement LED warning.Ideal for measuring insulation resistance in high-voltage electrical equipment, electricity wiring cable - ✅【BTMETER SERVICE】BT-6688B 1999 Counts Megameter suitable for measuring the insulation resistance of various electrical equipment and insulating materials such as transformers, motors, cables, switches, electrical appliances, etc. 5000V Megger with fast and effective 7 x 24 professional tech support. If you have any questions or concerns, please don't hesitate to reach out to us ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07C2SSH51 | | Best Sellers Rank | #43,968 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Insulation Resistance Meters | | Brand | BTMETER | | Brand Name | BTMETER | | Color | BT-6688B (1MΩ-200GΩ) | | Customer Reviews | 4.2 out of 5 stars 198 Reviews | | Included Components | 1* User manual, 1* BT-6688B Megohmmeter | | Item Dimensions | 10.4 x 9.2 x 3.5 inches | | Item Weight | 900 Grams | | Item dimensions L x W x H | 10.4 x 9.2 x 3.5 inches | | Manufacturer | BTMETER | | Measurement Type | Ohmmeter, Voltmeter | | Minimum Operating Voltage | 100 Volts | | Model | BT-6688B | | Part Number | BT-6688B | | Power Source | Battery Powered | | Specification Met | IEC 1010 | | Style | BT-6688B | | Style Name | BT-6688B | | UPC | 703546921777 | | Warranty Description | 1 year | ## Product Details - **Brand:** BTMETER - **Color:** BT-6688B (1MΩ-200GΩ) - **Item Weight:** 900 Grams - **Power Source:** Battery Powered - **Style:** BT-6688B ## Images ![BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display - Image 1](https://m.media-amazon.com/images/I/71hs92+TKjL.jpg) ![BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display - Image 2](https://m.media-amazon.com/images/I/71GSosxIfPL.jpg) ![BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display - Image 3](https://m.media-amazon.com/images/I/71OAxzCtyQL.jpg) ![BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display - Image 4](https://m.media-amazon.com/images/I/71QDeIkWLaL.jpg) ![BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display - Image 5](https://m.media-amazon.com/images/I/81pxVgOiCaL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: What's the accuracy of this insulation resistance tester?** A: Base on their manual, it says 1m～200m ohm: +/- 3.0%+5, 200m～10g ohm: +/- 5.0%+5, 10g～200g ohm:+/- 10.0%+5 **Q: Will this measure (readout) breakdown voltage?** A: It does it to a limited amount **Q: For the BT6688B insulation resistance tester, what is the test current for resistance measurements at rated voltages?** A: Do you mean what is the maximum current it can push if the resistance is very low? If not, the answer to this question will vary depending on which voltage setting you use and the resistance of the system you are testing. If for example, you test using the 1000v setting on a cable that has 2G-OHM resistance, the current is 1000 / 2,000,000,000 = .5 uA. **Q: Can it measure polarization index measurement (pi) and dielectric absorption ratio measurement (dar)?** A: Yes, Both require a megaohmmeter, You just have to follow the correct sequence /procedure ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does it's job and does it well. *by M***S on May 20, 2020* I needed a megohmmeter when installing Ditra heated floors and came across this when looking for one. The unit is well built, easy to use and did exactly what I needed it to at a fair price ### ⭐⭐⭐⭐ Great meter once you get a working one; very accurate *by A***R on March 20, 2024* The first unit I ordered had a miss-fitting negative lead that simply rattled around in the socket. I returned that one and received a second unit at no additional charge. One of the included batteries was leaking and measured zero; additionally it produced intermittent readings. Amazon refunded me for the second unit but told me to keep it. I decided to see if I could repair it rather than re-ordering another. I took it apart and found a loose solder joint which I fixed. The unit now works perfectly. I purchased it in order to verify the resistance of some high-gigohm resistors; the meter confirms their rated values within 1%. I've also tested it against various insulation materials for resistance with good results. A very nice meter if you get one that works! ### ⭐⭐⭐⭐⭐ Does the job *by T***Y on June 30, 2019* More than accurate enough for quick bench or field tests. Doesn't 'feel' as solid as my Fluke but is considerably less expensive and has a greater range of testing settings. Thick padding does a good job of protecting the actual meter. Provided test leads seem a little flimsy. Time will tell how they hold up for daily use. Only complaint: 5 days to process the order. Then actual shipping only took 2 days and was delivered on a Sunday even with the free shipping option. Unique combination of under/over achieving on the same order. ## Frequently Bought Together - BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display - Klein Tools ET600 Multimeter, Megohmmeter Insulation Tester, 4000 Ohms Resistance, 125V/250V/500V/1000V, Auto-Ranging TRMS Multimeter - ATOPLEE 3 Phase Sequence Presence Rotation Tester Indicator Detector Meter with LED and Buzzer 60V~600V (3 Phase AC) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/66364272-btmeter-bt-6688b-megohmmeter-200-gig-ohm-digital-insulation-resistance](https://www.desertcart.tn/products/66364272-btmeter-bt-6688b-megohmmeter-200-gig-ohm-digital-insulation-resistance) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-09*