[PORTABLE DESIGN] The magnetic field detector is handheld design, compact and portable, with low power consumption and high efficiency. Item Type: Magnetic Field Detector. [MULTIPLE FUNCTIONS] Automatic range switching, one key reset, maximum value holding, display backlight and 5 minute automatic shutdown.
eBay
5/20/40Pair /lot MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System Detector
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
433MHz Two-way Magnetic Sensor Wireless Door Window Open Close Detector Contact Alarm System For GSM Home Security
Aliexpress UK
It is used to test and learn electromagnetic radiation situation indoor and outdoor. 1 Electromagnetic Radiation Detector. Alarm Threshold: 40mG, 0.4μT. Unit: mG / μT (Magnetic Field). Resolution: 1mG, 0.1μT.
eBay
MC-38 Wired Door Window Sensor Detector Magnetic Switch Normally Closed or Normally Open NC/NO for Home Security Alarm System
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
Door Window Sensor Alarm 130dB Large Volume Wireless Remote Control PIR Alert Magnetic Induction Detector Security Burglar Siren
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
Ewelink Zigbee Door Sensor Wireless Magnetic Window Open Closed Alarm Detector Works With Zigbee2MQTT Alexa Google Need Gateway
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
90-240VAC Kitchen CH4 Natural Gas Leaking Detector Magnetic Solenoid Valve Cut Off Coal Gas Fire Alarm Sensor For Home Security
Aliexpress UK
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
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 Zigbee Door Windor Sensor Door Open Closed Burglar Magnetic Detector Smart Life Work With Alexa Google Home Automation
Aliexpress UK