

⚡ Clamp the power, own the precision!
The Sigma Instruments SG 903 is a robust digital AC/DC True RMS clamp meter featuring a 1200 Amp clamp range, 6000 counts display, and frequency measurement up to 10MHz. It includes essential diagnostic tools like continuity buzzer, diode check, and temperature measurement, all backed by a calibration certificate for guaranteed accuracy. Compact and battery-powered, it’s designed for professionals demanding reliable, high-performance electrical testing.





| Brand | Sigma Instruments |
| Power Source | Battery Powered |
| Style | Digital |
| Colour | yellow and red |
| Item Weight | 499 Grams |
| Item dimensions L x W x H | 20 x 7 x 2.5 Centimeters |
| Specification Met | CE |
| Measurement Type | Clamp Meter |
| Manufacturer | Sigma Instruments |
| Country of Origin | China |
| Model number | SG 903 |
| Number of Memory Sticks | 1 |
| Specific Product Use | Calibration |
| Item Weight | 499 g |
| Product Dimensions | 20 x 7 x 2.5 cm; 499 g |
| Batteries | 1 9V batteries required. (included) |
| Item model number | SG 903 |
| Item Height | 2.5 Centimeters |
| Item Width | 7 Centimeters |
| Included Components | 1 Electric Circuit Testing Device |
| Are batteries included? | Yes |
D**N
Precision of the instrument is best.So I like the product
Sigma is a reputed company.Clamp meter 903 is excellent in performance especilly in low dc &ac amps in clamp mode.The meter is in good condition.
S**Y
SIGMA MULTIMER , POOR QUALITY AND NO SUPPORT FROM AMAZON
VERY BAD PRODUCT AMAZON DO NOT RESPOND TO RETURN IT .AFTER SWITCHING ON ALL THE DISPALY IS ON AND BUZZER IS ALSO ON , IT NEVER COMS OUT OF IT , TRIED TO RETURN THE ITEM , BUT AMAZON IS NOT OFFERING ITS RETRURN
P**H
Nice product with one year celebration certificate
Nice performance and accurate valuation of all function
A**R
Good
Good product, value for money", "accuracy" and "easy to use".
K**S
Ok product
No recording of voltage /current in the loop. Rest ok
A**R
working good
Good product. Can measure most electrical parameters by a single meter. Excellent product for measuring both AC and DC current. This clamp can measure current up to 1200Amp
L**U
Bad product
Very bad product don't buy, after buying within 1 month it become faulty
S**A
Why problem on dc ampere Set on DC 1200A
When set on dc ampere then show 0.6234 something,this is wrong,
Trustpilot
3 weeks ago
1 month ago