Features 1.Easy to Use: Long press to turn the EMF meter on or off, short press to enable or disable the sound mutation function. 2.Mute Function: The mute function is suitable for those who find the alarm sound annoying, or use it in places like the library. Do not affect others. 3.Widely Used: Long press it to determine the level at which you want the sensor to start beeping and set a safe value, short press to choose a different mechanism, for Mili Gauss or for Micro Tesla. 4.Good Performance: The accuracy is ±5% (50μT to 200μT)μT, 50Hz or 60Hz. Resolution is 0.1mG, 0.01μT. Alarm threshold is 4mG, 0.4μT (adjustable), Superior performance, more accurate measurement. 5.Lightweight: This radiation detector only weights 108g / 3.81oz. Very light, easy to carry and use when going out, does not take up space and effortless. Specification Item Type: EMF Meter Gross Weight: 108g / 3.81oz Material: ABS plastic Display: 4 digit LCD display Unit: mG or μT (magnetic field) Range: 0~2000mG; 0~200μT Accuracy: ±5% (50μT to 200μT)μT, 50Hz or 60Hz Resolution: 0.1mG, 0.01μT Alarm Threshold: 4mG, 0.4μT (adjustable) Temperature: 0~50℃ / 32~122℉ Test Bandwidth: 30Hz-300Hz Number of Axes: Single axis sensor head Sampling Rate: 0.5 seconds Test Mode: Dual Mode Synchronous Test Out of Range Display: LCD display HI Battery: 3 AAA 1.5V (battery not included) Product Size: 13x 2.5cm / 5.12x0.98in Package List 1 x EMF Detector 1 x Manual