SMART SENSOR ST1393 geiger counter geigercounter Geiger counter dosimeter radiation detector Features: Dual Testing Functions: the EMF meter can accurately detect and measure the electric field radiation and magnetic field emiion at the same time. It also can measure the environment temperature(/). Audible and Visual Dual Alarm: if the tested value exceed the preset alarm value, it will produce sound and light alarm signal immediately. Wide Detecting Frequency &Measurement Range: 20Hz~300Hz magnetic field and 20Hz~3500MHz electric field of working frequency range; 0.01~199.9T(0.1~1999mG) magnetic field and 0~1999V/m electric Field of measuring range. User-friendly Design: soft operating buttons for the alarm value setting, MAX/AVG value switching, and units conversion, the mini pocket size EMF tester just powered by 3pcs AAA batteries, which makes it convenient for using and carrying. High Precision &Sensitivity: reliable for measure electric and magnetic field radiation of mobile phone, hair dryer, computer, TV, printer, attendance machine, refrigerator, etc. Specifications: Material: ABS Magnetic Field Strength Range: 0.01~199.9T(0.1~1999mG) Electric Field Strength Range: 0~1999V/m Magnetic Field Strength Resolution: 0.01T/0.01mG Electric Field Strength Resolution: 1V/m Magnetic Field Strength Frequency Range: 20Hz~300Hz Electric Field Strength Frequency Range: 20Hz~3500MHz Temperature Measurement Range: -10~50 Temperature Resolution: 0.1 Power Supply: 3 * 1.5V AAA battery (NOT included) Item Size: 130 * 50 * 27mm / 5.12 * 1.97 * 1.06in Item Weight: 85g / 2.99oz Package Weight: 127g / 4.48oz Package Size: 19.3 * 7.5 * 3.5cm / 7.60 * 2.95 * 1.38in Packing List: 1 * EMF Tester 1 * Manual (English) GM3120 This meter can test electric field radiation and magnetic field emiion to reach the optimal test result. It is used to test and learn electromagnetic radiation situation indoor and outdoor. It is equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the LCD digital display after proceing by control micro-chip. Features: One instrument with two uses, it can test the electric field and the magnetic field radiation at the same time. Sound-light alarm, when the test result exceeds the safe value, the instrument will alarm automatically. Data locking, one-key lock of the radiation value. LCD display of the values for easier reading. Radiation aement, remind you whether the radiation value is safe or not. Fashionable design, easy on-hand operation, it's easy to carry and make field measurement. Specifications: ColorOrange + Black Material: Plastic Unit: V/m (Electric Field); T(Magnetic Field) Accuracy: Electric: 1V/m; Magnetic: 0.01T Range: Electric: 1-1999V/m; Magnetic: 0.01-19.99T Alarm Threshold: Electric: 40V/m; Magnetic: 0.4T Display: 3-1/2 LCD Display Test Bandwidth: 5Hz-3500MHz Sampling Time: Approx. 0.4 Seconds Test Mode: Bimodule Synchronous Test Over Range Indication: LCD Displays "1" Operating Temperature: 0C-50C Operating Humidity: Relative Humidity