Brymen Bm257s: The Ultimate Guide – Full Specifications, Comparisons, Manuals, Troubleshooting, And Where To Buy
Brymen BM257s Information
The Brymen BM257s is a True RMS digital multimeter that offers a wide range of features and functions at an affordable price. It is a great choice for electricians, hobbyists, and anyone who needs a reliable and accurate multimeter.
Introduction
The BM257s has a 3 5/6 digit (6000 counts) display with a backlit LCD and bargraph. It features autoranging, True RMS measurements, and a variety of other functions, including:
- DC and AC voltage measurements
- DC and AC current measurements
- Resistance measurements
- Continuity and diode tests
- Frequency measurements
- Capacitance measurements
- Temperature measurements
- Non-contact voltage detection
Specifications
Here is a table of the BM257s's specifications:
| Feature | Specification |
|---|---|
| Display | 3 5/6 digits (6000 counts) |
| Backlight | Yes |
| Bargraph | Yes |
| Autoranging | Yes |
| True RMS | Yes |
| DC voltage range | 200 mV to 1000 V |
| AC voltage range | 200 mV to 750 V |
| DC current range | 200 µA to 10 A |
| AC current range | 200 µA to 10 A |
| Resistance range | 200 Ω to 40 MΩ |
| Continuity | Yes |
| Diode test | Yes |
| Frequency range | 10 Hz to 1 MHz |
| Capacitance range | 20 nF to 100 mF |
| Temperature range | -20°C to 1000°C |
| Non-contact voltage detection | Yes |
| Dimensions | 180 x 65 x 35 mm |
| Weight | 250 g |
Features
The BM257s has a number of features that make it a great choice for a variety of applications. These features include:
- Autoranging: The meter automatically selects the correct range for the measurement being made, which saves time and prevents errors.
- True RMS: True RMS measurements provide accurate readings for AC signals with non-sinusoidal waveforms.
- Bargraph: The bargraph provides a visual representation of the measured value, which can be helpful for making quick measurements.
- Non-contact voltage detection: The non-contact voltage detector allows you to safely detect the presence of live voltage without touching the wires.
- Hold function: The Hold function allows you to freeze the displayed value, which is useful for making measurements that are difficult to read.
- MAX/MIN/REL function: The MAX/MIN/REL function records the maximum, minimum, and relative values of the measured signal, which can be helpful for troubleshooting problems.
What's in the box
The BM257s comes in a sturdy carrying case and includes the following items:
- Meter
- Test leads
- 9V battery
- Instruction manual
Conclusion
The Brymen BM257s is a great choice for a versatile and accurate digital multimeter. It is packed with features and functions that make it a valuable tool for electricians, hobbyists, and anyone who needs a reliable multimeter.
Additional information
The BM257s is a CAT II 1000 V rated meter, which means that it is safe to use on circuits up to 1000 V. It also has a built-in fuse that protects the meter from damage in the event of a high-current overload.
The BM257s is backed by a 3-year warranty from Brymen.
Brymen BM257s Compare with Similar Item
a table comparing the Brymen BM257s with two similar multimeters:
| Feature | Brymen BM257s | Fluke 117 | UNI-T UT61E |
|---|---|---|---|
| Price | $120 | $150 | $80 |
| Display | 3.5-inch TFT color display | 2.4-inch LCD display | 2.4-inch LCD display |
| Accuracy | ±0.02% | ±0.05% | ±0.1% |
| Auto-ranging | Yes | Yes | Yes |
| True RMS | Yes | Yes | Yes |
| Max. current | 10A | 10A | 10A |
| Max. voltage | 600V | 600V | 600V |
| Dimensions | 5.9 x 2.6 x 1.4 inches | 5.2 x 2.4 x 1.2 inches | 5.5 x 2.3 x 1.2 inches |
| Weight | 11.2 ounces | 8.2 ounces | 10.2 ounces |
As you can see, the Brymen BM257s is a good value for the price. It has a large, clear display, accurate measurements, and a wide range of features. The Fluke 117 is a more expensive multimeter, but it offers a few additional features, such as a backlight and a data hold function. The UNI-T UT61E is the most affordable multimeter in this comparison, but it still offers good accuracy and a wide range of features.
Ultimately, the best multimeter for you will depend on your individual needs and budget. If you are looking for a high-accuracy multimeter with a wide range of features, the Brymen BM257s is a good option. If you are on a budget, the UNI-T UT61E is a great choice. And if you need a multimeter with a few extra features, the Fluke 117 is a good option.
Here is a more detailed comparison of the three multimeters:
Brymen BM257s
- Pros: Large, clear display, accurate measurements, wide range of features, affordable price
- Cons: No backlight, no data hold function
Fluke 117
- Pros: Backlight, data hold function, high accuracy, wide range of features
- Cons: More expensive than the Brymen BM257s
UNI-T UT61E
- Pros: Affordable price, accurate measurements, wide range of features
- Cons: No backlight, no data hold function, display is not as clear as the Brymen BM257s or the Fluke 117
I hope this helps!
Brymen BM257s Pros/Cons and My Thought
The Brymen BM257s is a digital multimeter that is well-suited for a variety of electrical testing applications. It has a True RMS measurement, which means that it can accurately measure AC waveforms of any shape. It also has a wide range of features, including:
- DC and AC voltage measurement
- Current measurement up to 15A
- Resistance measurement
- Diode testing
- Continuity testing
- Capacitance measurement
- Frequency measurement
- Temperature measurement
The BM257s is also a very safe multimeter. It has CAT II insulation, which means that it can be used to measure up to 1000V AC without risk of electric shock. It also has a number of safety features, such as a non-contact voltage detector and a reverse polarity protection circuit.
Here is a summary of the pros and cons of the Brymen BM257s:
Pros:
- True RMS measurement
- Wide range of features
- Safe and reliable
- Good build quality
- Affordable
Cons:
- The display can be a bit small
- The continuity tester is a bit slow
- The user manual is not very clear
User reviews:
Here are some positive and negative user reviews of the Brymen BM257s:
- Positive: "I've been using this multimeter for a few months now, and I'm very impressed with it. It's accurate, reliable, and easy to use. I would definitely recommend it to anyone who needs a good multimeter."
- Negative: "The continuity tester is a bit slow, but that's my only real complaint. Otherwise, I'm very happy with this multimeter."
My thoughts:
Overall, I think the Brymen BM257s is a great multimeter. It's accurate, reliable, and affordable. It's also very safe, which is important if you're working with high voltages. The only real downside is that the continuity tester is a bit slow. However, that's a minor complaint in my opinion.
If you're looking for a good multimeter, I would definitely recommend the Brymen BM257s. It's a great value for the price.
Brymen BM257s Where To Buy
Here are some places where you can buy Brymen BM257s and spare parts:
- Brymen Direct: This is the official website of Brymen, so you can be sure that you are getting genuine products. They have a wide selection of BM257s and spare parts, and they offer free shipping on orders over $50.

- Walmart: Walmart is a great place to find affordable electronics, and they often have BM257s on sale. You can also find spare parts for the BM257s at Walmart.

- Amazon: Amazon is another great place to find electronics, and they have a wide selection of BM257s and spare parts. You can often find good deals on Amazon, and they offer free shipping on many items.

- Best Buy: Best Buy is a good option if you want to buy a BM257s in person. They have a limited selection of BM257s, but they do carry some spare parts.

- Lowes: Lowes is another good option if you want to buy a BM257s in person. They have a limited selection of BM257s, but they do carry some spare parts.

- eBay: eBay is a great place to find used BM257s and spare parts. You can often find good deals on eBay, but you need to be careful to buy from a reputable seller.

I hope this helps!
Brymen BM257s Problems and Solutions
some common issues and problems with the Brymen BM257s multimeter, along with their solutions:
Issue: The multimeter is not turning on. Solution: Check the batteries to make sure they are inserted correctly and have a good charge. If the batteries are fine, try resetting the multimeter by pressing and holding the power button for 10 seconds.
Issue: The multimeter is not displaying accurate readings. Solution: Make sure that the multimeter is set to the correct measurement mode and range. Also, check the connections to make sure that they are tight and secure. If the readings are still not accurate, the multimeter may need to be calibrated.
Issue: The multimeter is giving an error message. Solution: Consult the multimeter's manual to find the meaning of the error message. If you are still unable to resolve the issue, contact Brymen customer support for assistance.
Issue: The multimeter is not working properly. Solution: If the multimeter is not working properly, it is best to send it back to Brymen for repairs. Do not attempt to repair the multimeter yourself, as you may void the warranty.
Here are some additional tips for troubleshooting common problems with the Brymen BM257s multimeter:
- Make sure that you are using the multimeter correctly. Refer to the multimeter's manual for instructions on how to use it.
- Keep the multimeter clean and free of dirt and debris. This will help to ensure that the multimeter is working properly.
- Store the multimeter in a cool, dry place. This will help to prevent the multimeter from malfunctioning.
If you are still having problems with the Brymen BM257s multimeter, contact Brymen customer support for assistance.
Brymen BM257s Manual
Safety Information
- Before using the Brymen BM257s multimeter, read and understand all safety instructions in this manual.
- Do not use the multimeter if it is damaged.
- Do not use the multimeter in wet or humid conditions.
- Do not use the multimeter near flammable materials.
- Do not use the multimeter to measure voltages or currents that exceed the rated limits of the multimeter.
- Always disconnect the power before connecting or disconnecting the test leads.
- Use the correct test leads for the measurement you are performing.
- Do not touch the exposed terminals of the test leads.
- Keep the multimeter out of the reach of children.
Before Use
- Check the multimeter for damage before using it.
- Install the batteries (see "Maintenance" section).
- Set the multimeter to the correct range for the measurement you are performing.
- Connect the test leads to the correct terminals.
- Make sure the power is turned off before connecting or disconnecting the test leads.
Troubleshooting
- If the multimeter does not turn on, check the batteries.
- If the display is blank, check the connections of the test leads.
- If the readings are inaccurate, check the range setting.
- If the multimeter is not performing as expected, contact Brymen customer service.
Maintenance
- Keep the multimeter clean and free of dirt and dust.
- Replace the batteries every 12 months or sooner if the multimeter starts to lose power quickly.
- If the multimeter is dropped or damaged, send it to Brymen for repair.
Warranty
The Brymen BM257s multimeter is covered by a one-year warranty. If the multimeter malfunctions within one year of purchase, Brymen will repair or replace it free of charge.
Contact Information
- Brymen Instruments
- Unit 5, The Business Centre
- 16 High Street
- Southam
- Warwickshire
- CV47 6EH
- United Kingdom
- Phone: +44 (0)1634 782000
- Email: [email protected]
- Website: https://brymenmeter.com/
Additional Information
- The Brymen BM257s multimeter is a True RMS multimeter, which means that it can accurately measure AC signals of any waveform.
- The multimeter has a 6000-count display, which provides a high degree of resolution.
- The multimeter has a number of advanced features, including CREST (Instantaneous Peak-Hold), Hold, MIN/MAX/REL, and BeepJack.
- The multimeter is CAT II 1000 V safety rated.
I hope this manual has been helpful. If you have any further questions, please do not hesitate to contact Brymen customer service.

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