Elma BM 257 is a new smart mini mult imeter, which gives two new exiting functions. Auto Check is an intelligent function which automatically detects and choose AC voltage, DC voltage and continuity test/resistance. All you need to do is to turn on the instrument and measure. Low Z is voltage measurement with a low impedance, which means, that the measuring point is loaded, and therefore is it the real voltage you are measuring. The instrument has build-in non contact detection of electrical fields, whick can be used to detect electromagnetical fieds from PC screens, or used as a non contact voltage detector. Elma BM 257 measures true RMS current, voltage, resistance, frequency, capacity, continuity and temperature. Elma BM 257 has backlighted display with analog bargraph for easy and quick reading. The instrument is equipped with automatical/ manual range selection, relative measurement, Peak hold, min/max, datahold and intelligent auto power off. With the PC-communication and the Windows software (extra option) is it possible to make ON-Line data logging. The instrument is very safeand robust. It can handle ffailure connection and is equipped with high efficiency fuses. Complies with IEC 61010-1 CAT III 600V. Size: 161 x 80 x 50 mm Weight: 340 g
Elma BM 257 is a new smart mini mult imeter, which gives two new exiting functions. Auto Check is an intelligent function which automatically detects and choose AC voltage, DC voltage and continuity test/resistance. All you need to do is to turn on the instrument and measure. Low Z is voltage measurement with a low impedance, which means, that the measuring point is loaded, and therefore is it the real voltage you are measuring. The instrument has build-in non contact detection of electrical fields, whick can be used to detect electromagnetical fieds from PC screens, or used as a non contact voltage detector. Elma BM 257 measures true RMS current, voltage, resistance, frequency, capacity, continuity and temperature. Elma BM 257 has backlighted display with analog bargraph for easy and quick reading. The instrument is equipped with automatical/ manual range selection, relative measurement, Peak hold, min/max, datahold and intelligent auto power off. With the PC-communication and the Windows software (extra option) is it possible to make ON-Line data logging. The instrument is very safeand robust. It can handle ffailure connection and is equipped with high efficiency fuses. Complies with IEC 61010-1 CAT III 600V. Size: 161 x 80 x 50 mm Weight: 340 g
in 2 offers
The lowest price for Wattmaster RMS Digital Multimeter W. Auto Check WATEL-BM257 by Total Tools right now is $249.00 at Total Tools, compared across 2 retailers.
The all-time low was $200.00 on 29 Nov 2024 — today's price is 25% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 21 Oct 2026.
Wattmaster RMS Digital Multimeter W. Auto Check WATEL-BM257 by Total Tools
Elma BM 257 is a new smart mini mult imeter, which gives two new exiting functions. Auto Check is an intelligent function which automatically detects and choose AC voltage, DC voltage and continuity test/resistance. All you need to do is to turn on the instrument and measure. Low Z is voltage measurement with a low impedance, which means, that the measuring point is loaded, and therefore is it the real voltage you are measuring. The instrument has build-in non contact detection of electrical fields, whick can be used to detect electromagnetical fieds from PC screens, or used as a non contact voltage detector. Elma BM 257 measures true RMS current, voltage, resistance, frequency, capacity, continuity and temperature. Elma BM 257 has backlighted display with analog bargraph for easy and quick reading. The instrument is equipped with automatical/ manual range selection, relative measurement, Peak hold, min/max, datahold and intelligent auto power off. With the PC-communication and the Windows software (extra option) is it possible to make ON-Line data logging. The instrument is very safeand robust. It can handle ffailure connection and is equipped with high efficiency fuses. Complies with IEC 61010-1 CAT III 600V. Size: 161 x 80 x 50 mm Weight: 340 g
Elma BM 257 is a new smart mini mult imeter, which gives two new exiting functions. Auto Check is an intelligent function which automatically detects and choose AC voltage, DC voltage and continuity test/resistance. All you need to do is to turn on the instrument and measure. Low Z is voltage measurement with a low impedance, which means, that the measuring point is loaded, and therefore is it the real voltage you are measuring. The instrument has build-in non contact detection of electrical fields, whick can be used to detect electromagnetical fieds from PC screens, or used as a non contact voltage detector. Elma BM 257 measures true RMS current, voltage, resistance, frequency, capacity, continuity and temperature. Elma BM 257 has backlighted display with analog bargraph for easy and quick reading. The instrument is equipped with automatical/ manual range selection, relative measurement, Peak hold, min/max, datahold and intelligent auto power off. With the PC-communication and the Windows software (extra option) is it possible to make ON-Line data logging. The instrument is very safeand robust. It can handle ffailure connection and is equipped with high efficiency fuses. Complies with IEC 61010-1 CAT III 600V. Size: 161 x 80 x 50 mm Weight: 340 g
Last updated at 21/10/2026 00:51:50
WATTMASTER RMS Digital Multimeter w. Auto Check WATEL-BM257
Free delivery between 27–30 Oct
Multimeter RMS with Auto Check True RMS Measurement Wattmaster
Delivery between Wed – Tue $15.90
| Device Type | Multimeter |
| Device Subtype | True RMS |
| Safety Rating | CAT II 1kV, CAT III 600V & CAT IV 300V |
| Safety Certification | EN61010-1/-2-030/-2-033, EN61326-1:2013 |
| Accuracy | 0.2% (Basic DCV Accuracy) |
WATTMASTER RMS Digital Multimeter w. Auto Check WATEL-BM257
Free delivery between 27–30 Oct
Multimeter RMS with Auto Check True RMS Measurement Wattmaster
Delivery between Wed – Tue $15.90
| Device Type | Multimeter |
| Device Subtype | True RMS |
| Safety Rating | CAT II 1kV, CAT III 600V & CAT IV 300V |
| Safety Certification | EN61010-1/-2-030/-2-033, EN61326-1:2013 |
| Accuracy | 0.2% (Basic DCV Accuracy) |
