Premium Material: This main body is made of plastics material, the discharge pen is made of freeze-resistant silicone, which is fine insulating and highly elastic.
Multi-functional design: The capacitor discharge pen is in the maintenance of products, you can switch the power supplys in the high voltage capacitor or AC capacitor of the stored electricity quickly discharge
Easy to Use: Use a constant current source circuit for rapid discharge, and use red and black meter pens that do not distinguish between positive and negative
LED Indicator: There is an LED indicator, LED on, which indicates that the capacitor still has power, and LED off, which indicates that the power has essentially been fully discharged.
Buzzer Alarm Feature: Version V4.0 adds the buzzer alarm feature, where the buzzer sounds when there is electricity and does not sound when there is no electricity.
This meter can test magnetic field emission 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 processing by control micro-chip. Features: One EMF Tester for testing the magnetic field radiation and temperature at the same time. Measure radiation of high voltage power lines, appliances, electrical wires. Sound-light alarm, when the test result exceeds the safe value, the instrument will alarm automatically. Data hold and max measurement, one-key lock the radiation value. Large & clear LCD display of the values for easy reading. Easy to operate with easy one-hand operation, easy to carry and make field measurement. Can measure the environment temperature with 2 temperature units (℃ and ℉). Specifications:  Color: Blue + Black    Material: ABS Plastic Unit: mG / μT (Magnetic Field) Accuracy: ±5% (50μT to 200μT)μT at 50Hz or 60Hz Range: Electric: 0～2000mG; Magnetic: 0～200μT Resolution: 1mG, 0.1μT Alarm Threshold: 40mG, 0.4μT Temperature: 0～50℃ / 32～122℉ Display: 4 digits LCD Display Test Bandwidth: 30Hz-300Hz Number of Axis: Single Axis Inductive Head Sampling Rate: 0.5 Seconds Test Mode: Bimodule Synchronous Test Over Range Indication: LCD Displays "HI" Operating Temperature: 0～50℃, Relative Humidity 0～80% Storage Temperature: -10～50℃, Relative Humidity: 0～70% Power Supply: 3 * 1.5V AAA Battery (NOT Included) Item Size: Approx. 130 * 50 * 27mm / 5.12 * 1.97 * 1.06in (L * W * H) Item Weight: Approx. 74g / 2.62oz Package Size: Approx. 22 * 15 * 3.5cm / 8.66 * 5.91 * 1.38in (L * W * H) Package Weight: Approx. 108g / 3.82oz Package List: 1 * Electromagnetic Radiation Detector 1 * User Manual (English)