The results were applied to test algorithms which have been coded into the Greentest device. If you insert a place, pull it out and insert it, you may get different results. There are fluctuations.
eBay
FNIRSI WD-02 Metal Detector Wall Detector Multifunctional With Positioning Hole AC Live Cable Rebar Wooden Beams Metal Pipes
Aliexpress UK
Sensor: 48mm Geiger Counter Tube. Item Type: Pen Type Nuclear Radiation Detector. Clear Display: White light display design, clear display, night can also be normal reading, convenient for your use.
eBay
GDX8000 Gold Detector Underground Metal Seeking Treasure Detector Professional Outdoor Field Exploration Finder Digger Device
Aliexpress UK
It is used to test and learn electromagnetic radiation situation indoor and outdoor. - 1 x GM3120 Electromagnetic Radiation Detector. - Data locking, one-key lock of the radiation value. Type : Radiation Detector.
eBay
CO Alarm Sensor 85dB High Sensitive Warning Smoke and Carbon Monoxide Detector Alarm Battery Powered CO Detector for Home Hotel
Aliexpress UK
Intuitive Display, Easy to Understand: The tester uses a 9 LED light to indicate radiation intensity, with green representing normal and low-radiation areas, yellow for caution areas, orange for high-radiation areas, and red for warning areas.
eBay
Tuya Smart WiFi Infrared Motion Detector Solar Outdoor PIR Wireless Strobe Siren Detector Sound Alarm Waterproof Remote Control
Aliexpress UK
【Practical tool for Life and Production】Portable emf detector can identify magnetic and electric field emf pollution. Detect electromagnetic radiation for better living. Its ergonomic design and non-slip handle ensure comfortable use and easy portability, ideal for outdoor use.
eBay
180 Degrees Gas Alarm Gas Leak Alarm Natural Gas Detector Natural Sensitive Gas Leak Detector Gas Leak Sensor
Aliexpress UK
You can also use the EMF detector for fun "ghost hunting" activities. RF Radiation Monitoring Range: 0.001–200 mW/m²; Magnetic Field Range: 0.01–200 µT / 0.1–2000 mG (AC magnetic field only, cannot detect static magnetic fields); Electric Field Range: 1–2000 V/m.
eBay
Metal Detector Accessories Universal Shaft Telescopic Handle Stem for NOKTA XP DEUS metal detector
Aliexpress UK
Sensor: 48mm Geller counter. Audible and visual alarm. Alarm threshold deviation: based on 137Cs γ (-17%.+25%). One button startup and instant test. All products are quality checked. Use OLED display.
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MASTFUYI FY8851 Magnetic Pole Pen Polarity Tester N/S Pole Detector North South Magnetic Pole Identifier Magnet Detector
Aliexpress UK
Product model: HT627. The EMF detector is a portable health and safety field detector that can detect AC magnetic fields, electric fields, and high-frequency (RF) radiation, and is mainly used in the detection and Evaluate effects on humans.
eBay
Metal Detector High-precision Hand-held Outdoor Detector Waterproof Underground Treasure Hunter Coin Gold Finder
Aliexpress UK