1 x Magnetic Field Viewer. This project is easy to use. place the card on the of a magnetic material and it will display a patterned magnetic field. Great for personal or scientific research. It can help us study magnetic fields that we cannot see.
eBay
Tuya Smart WiFi Door Window Sensor Open Closed Magnetic Detector Smart Home APP Voice Control Via Alexa Google Home Smart Life
Aliexpress UK
1 x EMF Magnetic Field Detector (Battery is not included). The 4th Light (ORANGE) detects a High Level EMF field in the range between 10 to 20 mG. The 1st Light detects a Normal EMF field, what is always around us.The range is between 0 to 1.5 mG.
eBay
Tuya Zigbee Door Windor Sensor Door Open Closed Burglar Magnetic Detector Smart Life Work With Alexa Google Home Automation
Aliexpress UK
The 1st Light detects a Normal EMF field, what is always around us.The range is between 0 to 1.5 mG. The 2nd Light (GREEN) detects a Low Level EMF,which range is between 1.5 to 2.5 mG. The 3rd Light (YELLOW) detects a Mid Level EMF in the range between 2.5 to 10 mG.
eBay
MC-38 Wired Door Window Sensor Detector Magnetic Switch Normally Closed or Normally Open NC/NO for Home Security Alarm System
Aliexpress UK
Easy To Use and Operate: Electromagnetic radiation detector is mainly used for electrical appliances in life, which can effectively help people away from radiation sources and protect them from radiation hazards!
eBay
MC-38 wired door and window sensor detector magnetic switch NC/NO, suitable for home security alarm system
Aliexpress UK
The 1st Light detects a Normal EMF field, what is always around us.The range is between 0 to 1.5 mG. The 2nd Light (GREEN) detects a Low Level EMF,which range is between 1.5 to 2.5 mG. The 3rd Light (YELLOW) detects a Mid Level EMF in the range between 2.5 to 10 mG.
eBay
Tuya Smart ZigBee Door Window Sensor Real Time Wireless Magnetic Alarms APP Remote Monitor Smart Home Security Window Detector
Aliexpress UK
Detector 1. Compact product, easy to carry and storage. High-definition VA anti-display color screen: ultra-clear digital and analog dual display, at a glance. Storage temperature and humidity: -10~60℃/0~80%RH.
eBay
10PCS~100Pcs A3144 3144 Hall Effect Sensor OH3144 AH3144E 3Pins Magnetic Detector
Aliexpress UK
These are amongst the most concerning new sources of our electromagnetic field exposures as the currents they induce in your body are proportional to the frequency. Such currents have been shown to significantly affect the nervous system.
eBay
Ewelink Zigbee Door Sensor Wireless Magnetic Window Open Closed Alarm Detector Works With Zigbee2MQTT Alexa Google Need Gateway
Aliexpress UK
This portable electromagnetic radiation detector is a must-have for anyone concerned about the safety of their surroundings. Designed by Mestek, a trusted brand in the industry, this device is perfect for detecting temperature, electric, and magnetic field changes. Its compact size and lightweight design make it easy to carry around, while its user-friendly interface ensures accurate readings every time. Ideal for use in business, office, and industrial settings, as well as for personal use, this radiation detector is a valuable addition to any toolkit. With its precise measurements and reliable performance, it is an essential instrument for anyone who wants to stay safe in their environment.
eBay
Tuya Door sensor with battery recharge port wireless Magnetic window detector Magnet switch open alarm smart life AlexaGoogle
Aliexpress UK