Extech EMF450 Electromagnetic Field Strength Meter
The Extech EMF450 provides a simple way to measure electromagnetic fields in many settings. It combines accuracy with ease of use, so users can check environments with confidence. This meter suits home, industrial, and lab tasks where reliable readings matter.
Users can measure magnetic, electric, and RF fields with one device. In addition, the Extech EMF450 uses a 3-axis sensor to improve accuracy and ensure stable results. This helps when checking different sources such as appliances or power lines.
Clear Display and Alerts
A bright 2.4 inch colour TFT screen shows clear data at all times. Furthermore, traffic light style indicators make it easy to see exposure levels quickly. Audible alarms also warn users when readings rise above safe limits.
Operation stays simple thanks to an easy menu and clear controls. The Extech EMF450 supports several languages, which helps users work faster in different regions. Data hold allows readings to stay on screen for review.
Flexible Field Measurement
The device supports a wide frequency range from low frequency fields to 3.5GHz RF signals. As a result, it can monitor modern devices such as mobile phones and base stations. It also stores up to 20 RF readings for later checks.
Power comes from standard AAA batteries, making replacement quick and easy. The Extech EMF450 also includes auto power off to save energy during use. With its compact size, it is ideal for quick checks and routine inspections.
Key Features
- Measures magnetic electric and RF fields
- 3-axis sensor improves measurement accuracy
- Stores up to 20 RF readings internally
- Colour TFT display with clear visual alerts
- Audible alarm for high exposure levels
- Supports five interface languages
- Data hold function for easy reading review
- Auto power off to extend battery life
- Compact design for portable field testing
- Runs on three standard AAA batteries
Technical Specifications
| Manufacturer | Extech |
| Manufacturer part code | EMF450 |
| Magnetic field range | 0 to 2000mG or 0 to 200µT |
| Magnetic field resolution | 0.02mG to 0.1mG and 0.02µT to 0.1µT |
| Magnetic field accuracy | ±15 percent plus 100 digit |
| Electric field range | 50V per m to 2000V per m |
| Electric field resolution | 1V per m |
| Electric field accuracy | ±7 percent plus 50 digit |
| RF strength range | 0.02µW per m² to 554.6mW per m² |
| RF frequency range | 50MHz to 3.5GHz |
| RF resolution | 0.02µW per m² to 0.2mV per m |
| RF accuracy | ±2dB at 2.45GHz |
| Display | 2.4 inch colour TFT 240 by 320 pixels |
| Data storage | Up to 20 RF readings |
| Bargraph indicators | Green yellow and red exposure levels |
| Dimensions | 4.5 x 2.4 x 0.8 inches |
| Weight | 120g |
| Power supply | Three AAA batteries |
| Auto power off | Yes |
| Warranty | 12 month warranty |
Comparison Table
| Level | Magnetic Field | RF Strength | Electric Field |
| Green | 0 to 10mG | 0 to 0.59mW per m² | 0 to 500V per m |
| Yellow | 10.01 to 100mG | 0.6 to 1.9mW per m² | 501 to 1000V per m |
| Red | 101 to 2000mG | Above 10mW per m² | Above 1001V per m |
Document Downloads
What’s Included
- Extech EMF450 Electromagnetic Field Strength Meter
- User manual
- Three AAA batteries