Description
Introduction GW-Instek GDM-350B Handheld Digital Multimeter
The GW-Instek GDM-350B Handheld Digital Multimeter is a compact, high-precision measurement tool built for engineers, technicians, and students who demand reliable performance in a portable package. Engineers across Bangladesh choose this multimeter because it combines everyday measurement functions with fuse-protected safety and a clear backlit LCD display. This 3.5-digit, 1999-count instrument covers DC/AC voltage, DC/AC current, resistance, diode testing, transistor hFE, continuity, and K-type temperature measurement — making it one of the most versatile handheld DMMs in its price class. GW-Instek GDM-350B Handheld Digital Multimeter
Specifications GW-Instek GDM-350B Handheld Digital Multimeter
| Parameter | Specification |
| Model | GDM-350B |
| Brand | GW Instek (Good Will Instrument) |
| Type | Handheld Digital Multimeter (DMM) |
| Display | 3.5-Digit LCD with Backlight |
| Max Display Count | 1999 Counts |
| DC Voltage Ranges | 200mV, 2000mV, 20V, 200V, 250V |
| DC Voltage Accuracy | ±(0.5% Reading + 2 Digits) |
| AC Voltage Ranges | 200V, 250V |
| AC Voltage Accuracy | ±(1.2% Reading + 10 Digits) |
| DC Current Ranges | 2000µA, 20mA, 200mA, 10A |
| DC Current Accuracy | ±(1.0% Reading + 2 Digits) for µA/mA; ±(2% + 5 Digits) for 10A |
| AC Current Ranges | 20mA, 200mA, 10A |
| AC Current Accuracy | ±(1.5% Reading + 5 Digits) |
| Resistance Ranges | 200Ω, 2000Ω, 20kΩ, 200kΩ, 2000kΩ, 20MΩ (6 ranges) |
| Resistance Accuracy | ±(0.8% Reading + 5 Digits) up to 2MΩ; ±(1% + 5 Digits) for 20MΩ |
| Temperature Range | -40°C to +1000°C (K-Type Thermocouple) |
| Temperature Accuracy | ±(1.0% Reading + 3 Digits) for 0°C–100°C; ±(2.5% + 2 Digits) for >100°C–1000°C |
| Diode Test | Display shows forward voltage drop (up to 2.3V) |
| Continuity Test | Buzzer sounds when resistance < 10Ω |
| Transistor hFE | Supported |
| Range Selection | Auto and Manual |
| Safety Rating | IEC/EN 61010-1: CAT III 250V, Pollution Degree 2 |
| Overload Protection (mA) | Fuse: F 1A H 240V, φ6×25mm ceramic (CE) |
| Overload Protection (10A) | Fuse: F 10A H 240V, φ6×25mm ceramic (CE) |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Storage Temperature | -10°C to 50°C (14°F to 122°F) |
| Relative Humidity | ≤75% at 0°C–30°C; ≤50% at 30°C–40°C |
| Elevation | 0 to 2000m |
| Battery | 9V 6F22 / NEDA 1604 / 006P |
| Low Battery Indicator | Symbol displayed on LCD |
| Auto Power Off | Yes |
| Dimensions (L×W×H) | 137mm × 72mm × 35mm |
| Net Weight | Approx. 200g (battery included) |
| Certification | CE |
| Accessories Included | Test leads, K-type thermocouple, 9V battery, user manual |
Key Features GW-Instek GDM-350B Handheld Digital Multimeter
- 5-digit LCD display with 1999-count maximum reading
- Backlit display for clear reading in low-light environments
- Measures DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Temperature, Diode, Transistor hFE, and Continuity
- Auto-ranging and manual range selection for flexible operation
- Automatic power-down function to extend battery life
- Fuse-protected current input for safety in mA and 10A ranges
- Rotary selector switch and easy-to-press push buttons
- K-type thermocouple included for temperature measurements up to 1000°C
- Relative (REL) measurement mode for comparative readings
- Compact and lightweight — approximately 200g with battery
- CAT III 250V safety rating with double insulation
- CE certified for international standards compliance GW-Instek GDM-350B Handheld Digital Multimeter
- 9V battery operation with low-battery indicator on LCD
- Dimensions: 72mm × 137mm × 35mm — pocket-friendly design
Applications GW-Instek GDM-350B Handheld Digital Multimeter
- The GW-Instek GDM-350B serves a wide range of measurement tasks across multiple industries:
- Electronics repair shops: troubleshoot faulty circuits, components, and PCBs
- Electrical installation: verify voltage levels, current draw, and wiring continuity
- HVAC and refrigeration: measure temperature with the included K-type thermocouple
- Automotive repair: check battery voltage, sensor outputs, and wiring integrity
- Academic and research labs: conduct practical experiments and component testing
- Industrial maintenance: monitor machinery voltage and current during scheduled servicing
- Home appliance servicing: diagnose faults in fans, motors, and power supplies GW-Instek GDM-350B Handheld Digital Multimeter
- Telecom and IT infrastructure: test power rails and signal lines GW-Instek GDM-350B Handheld Digital Multimeter
Who Uses This GW-Instek GDM-350B Handheld Digital Multimeter
The GW-Instek GDM-350B suits a broad range of professionals and learners:
- Electrical engineers and design engineers who need a dependable pocket multimeter on the job GW-Instek GDM-350B Handheld Digital Multimeter
- Field service engineers performing maintenance or troubleshooting in industrial environments
- Electronics technicians at repair centers, service workshops, and factories
- HVAC engineers and technicians requiring integrated temperature measurement
- Automotive electricians diagnosing vehicle electronics
- University and polytechnic students learning electrical and electronics engineering GW-Instek GDM-350B Handheld Digital Multimeter
- Hobbyists and makers building and testing DIY electronics projects
- Procurement and QC professionals verifying incoming components
Frequently Asked Questions (FAQ)
Q1: Does the GW-Instek GDM-350B measure AC current?
Yes. The GDM-350B measures AC current in three ranges: 20mA, 200mA, and 10A. It handles most standard AC current testing tasks in electrical and electronics work.
Q2: Does it include a K-type thermocouple for temperature measurement?
Yes. GW Instek includes a K-type thermocouple in the standard package. This allows temperature measurement from -40°C up to +1000°C, which covers most industrial and HVAC applications.
Q3: What safety category does the GDM-350B fall under?
The GDM-350B meets the IEC/EN 61010-1 CAT III 250V standard with Pollution Degree 2 rating. This makes it suitable for measurements on building installations, distribution boards, and industrial equipment up to 250V GW-Instek GDM-350B Handheld Digital Multimeter.
Q4: What battery does the GDM-350B use?
It uses a standard 9V battery (6F22, NEDA 1604, or 006P type). The LCD display shows a battery warning symbol when the charge runs low. The auto power-off feature extends battery life during infield use.
Q5: What is the maximum DC voltage this meter can measure?
The GDM-350B measures DC voltage up to 250V across five ranges: 200mV, 2000mV, 20V, 200V, and 250V. The DC voltage accuracy stands at ±(0.5% Reading + 2 Digits).
Q6: Is the GDM-350B suitable for students and beginners?
Absolutely. The rotary selector switch, clear backlit LCD, and intuitive layout make this meter easy to learn and use. Students studying electrical engineering or electronics benefit from its broad measurement coverage at an affordable price point.
Q7: Does ASTZBD provide a warranty for this product?
Yes. ASTZBD provides the standard manufacturer warranty on all GW Instek products. Contact our customer support team for warranty claims, repairs, or technical questions.
Why Buy from ASTZBD
- 100% genuine GW Instek products — sourced directly from authorized distributors
- Competitive price in Bangladesh — no hidden charges
- Fast delivery across Dhaka and all over Bangladesh
- Technical support available from knowledgeable sales engineers
- Easy returns and warranty claim process
- Safe and secure online payment options
- Trusted by thousands of engineers, labs, and institutions across Bangladesh
- Bulk order discounts available for institutions and resellers
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