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
eBay
normally closed Alarm system Wired Garage Metal Roller Shutter street factory Gate Door Sensor detector Magnetic Contact Switch
Aliexpress UK
The first light detects a normal EMF field, which is always around us. Ranges from 0 to 1.5 mG. 2nd Light (GREEN) detects a low level EMF, which ranges from 1.5 to 2.5 mG. 4th light (ORANGE) detects high level EMF field in the range of 10 to 20 mG.
eBay
MOES Tuya Zigbee Smart PIR Sensor Human Body Infrared Motion Detector With Magnetic Base Home Security Automation Battery Power
Aliexpress UK
[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
ZigBee Tuya Smart Door Window Gate Sensor Home Real Time Open/Close Alarm Wireless Connection Magnetic Detector for Alexa Google
Aliexpress UK
1 x EMF Magnetic Field Detector (Battery is not included). The 1st Light detects a Normal EMF field, what is always around us.The range is between 0 to 1.5 mG. The 4th Light (ORANGE) detects a High Level EMF field in the range between 10 to 20 mG.
eBay
Zigbee Door Sensor Wireless Magnetic Window Open Closed Alarm Detector Works With Zigbee2MQTT Alexa Google Need Gateway tuya
Aliexpress UK
Special function 5-LED indicator light represents different radiation values. Application of 50/60Hz frequency monitoring, dark green 0 to 1.5 mgauss; green light 1.5 to 2.5 mgauss; yellow 2.5 to 10 mgauss; orange 10 to 20 mgauss; red 20 + mgauss.
eBay
2pcs/1set-Wireless Door Window Magnetic Sensor Alarm Detectors Home Security Alarm System
Aliexpress UK
Radiofrequency Power Range of Radiation: 0.2-1000mW/cm². Magnetic Field. • Alarm Threshold: 0.4μT. • Alarm Threshold: 40V/m. Electric Field. Type-C Cable. • Range: 0.01μT - 99.99μT. • Range: 1V/m - 1999V/m.
eBay
2pcs/1set-Wireless Door Window Magnetic Sensor Alarm Detectors 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
5/20/40Pair /lot MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System Detector
Aliexpress UK