Compare Emf Meters - Side-by-Side Specs

Analog meters (e.g., TriField TF2) use a needle dial. They're simple, don't require batteries for the display, and some users find them more intuitive for spotting changes. Digital meters (e.g., GQ EMF-390) show numeric values and often include logging, backlight, and hold functions. Analog can be more responsive to rapid changes; digital is better for precise readings and record-keeping. For quick scans, analog works well. For data and analysis, digital is preferred. Many professionals use both.

Consumer EMF meters typically aren't user-calibratable. Quality meters (TriField, GQ, Cornet) are calibrated at the factory. Over time, accuracy can drift. Some manufacturers offer recalibration services. For critical use, send the meter to the manufacturer or a lab every few years. For casual home use, factory calibration is usually sufficient. Avoid dropping or exposing the meter to extreme conditions. If readings seem off, compare against a known source or a second meter to spot-check.

RF (radio frequency) comes from wireless devices—WiFi, cell phones, Bluetooth, cell towers. It's high-frequency (MHz to GHz). Magnetic fields come from AC current—power lines, wiring, appliances. Electric fields come from voltage in wiring and electronics. RF decreases with distance quickly; magnetic and electric fields extend farther. Different meters measure different types. A 3-in-1 meter covers all three. RF is often the main concern for wireless exposure; magnetic/electric matters for power lines and wiring.