<p>&nbsp;</p> <p>The Smart Sensor ST-1393 EMF meter can accurately detect & measure the electric field radiation & magnetic field emission at the same time. It can also measure the environment temperature(& 8451;/& 8457;).<br><br>Audio & visual alarm: if the tested value exceeds the pre-set alarm value, it will produce a sound & light alarm signal immediately.</p> <p>Wide detecting frequency & measurement range: 20Hz~300Hz magnetic field & 20Hz~3500MHz electric field working frequency range.</p> <p>0.01~199.9&mu;T(0.1~1999mG) magnetic field & 0~1999V/m electric field measuring range.</p> <p>User-friendly design: soft operating buttons for the alarm value setting, MAX/AVG value switching & units conversion.</p> <p>The EMF tester is powered by 3 x AAA batteries.</p> <p>High precision & sensitivity: reliable for measuring electric & magnetic field radiation from mobile phones, hair dryers, computers, TV&rsquo;s, printers, refrigerators & more.</p> <p>Specifications:</p> Magnetic field strength range: 0.01~199.9&mu;T(0.1~1999mG) Electric field strength range: 0~1999V/m Magnetic field strength resolution: 0.01&mu;T/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& 8451; Temperature resolution: 0.1& 8451; Power supply: 3 x 1.5V AAA battery (not included) Item size: 130mm x 50mm x 27mm Item weight: 85g Package size: 19.3cm x 7.5cm x 3.5cm <p>Packing List:<br><br>1 x EMF Tester<br>1 x Manual</p>