• Easy to use
• No need to learn how to turn off the transmissions from the cellphone.
• Cheap and effective.

Limitations

1. If the bag is put next to a cellular antenna or a “reception amplifier,” the cellphones inside the bag might get some reception.
2. Blocks the RF radiation from the cellphone, not the ELF magnetic or electric field emitted while charging the phone.

Video Demonstration

The post CELLPHONE BLOCKING SMALL BAG (Faraday Cage) appeared first on For EHS By EHS.

The ENV RD-100 was born out of more than 20 years of practical experience of being an EHS person,  supporting EHS individuals and raising EMF awareness. We realized that users need a meter that is extremely simple to operate straight out of the box, yet powerful enough to deliver professional-grade diagnostics when locating radiation sources, and mitigating EMF exposure.

Dual-Mode Functionality: Tailored for Every Level of Expertise

1. Beginner Mode (Instant Awareness): The radiation level is instantly represented by 4 clear LEDs (Green, Yellow, and two Reds). The threshold levels for these LEDs are configured based on our and others understanding of the possible health risk, rather than lax government standards, giving you instant peace of mind without needing to interpret complex scientific formulas.

2. Advanced Mode (Scientific Precision): A large, detailed LCD screen displays real-time data:

   • Peak values (re-calculated every half-second) and maximum peak since power-on.

   • Average values (30 seconds average).

   • Duty Cycle measurements (the percentage of active transmission time) in RF mode.

   • Signal frequency in low-frequency magnetic (LFM) and electric (LFE) modes.

   • A 30-second history graph showing real-time fluctuations.

Key Features and Practical Benefits:

• Joint Mode (One-Screen Scan): View all three EMF types of EMF (RF, LFM, LFE) simultaneously on a single screen. This allows you to quickly scan a room/car/apartment/office and immediately spot which type of field is elevated.

• RF Modulation Display: View on the meter’s screen (and hear via the speaker) the wave shape of the RF signal over a 100ms or 0.5s window, assisting in identifying the exact nature of the wireless source.

• Data Logging via PC (Optional): Connect the meter to a PC or Android device using a specialized active USB Serial cable (sold separately) to record and analyze measurements over hours (perfect for overnight bedroom monitoring).

• Long Battery Life: Runs on 2 standard AA batteries, offering up to 20 hours of continuous operation (when using quality alkaline batteries).

• Built to Last: Comes with a custom protective carrying case for safe storage and travel.

• Made in Israel: Proudly developed, manufactured, and shipped from Israel.

Technical Specifications:

• Measurement Types: Radio Frequency Radiation(RF), LF Magnetic Fields(LFM), LF Electric Fields(LFE).

• Max Sampling Rate: 60,000 samples per second.

• Display: Graphical LCD + 4-LED quick indicator.

• Audio: Internal speaker for RF modulation feedback (RF sound signature).

• Power: 2x AA batteries.

• Warranty: 2-year limited warranty.

Basic Features of the ENV RD-100

• RF, LFM, LFE measurement.
• 4 indication LEDs.
• Detailed Display
• Audio feedback for RF
• RF Modulation mode
• Joint mode (all radiation types on the same screen)
• Fast sampling rate
• Powered by 2 AA batteries (not included but very easy to get, cheap, & can last for up to 20 hours of work time with this meter).
• Including a Case
• Optional – PC connection and measuring/recording software with an optional USB active data cable.
• Developed by www.envirosens.com
• Defined, customized, QA, and approved by www.norad4u.com
• Made in Israel
• Sent from Israel
• Model Year 2025
• 2-years limited warranty by www.envirosens.com

Strong points of the ENV RD-100

• Very fast sampling rate- Most important!
• Easy to operate and read
• Both RF, LFM & LFE
• Joint mode allows to see both RF, LFM, and LFE values
• Advanced features for advanced users via Mini USB connection to a PC
• Audio Feedback helps you to identify the source more easily
• Modulation mode shows the RF signal for 100mS or 500mS. This helps you to identify the source more easily
• Long battery life, operates with cheap and easy-to-get batteries.

Limitations 

• a Single-axis meter (most RF meters for home use are)

Usage 

• For RF measurement, hold it vertically (usually)
• For ELF measurement, measure in X,Y and Z axis.
• Measure RF and ELF levels.
• Track and find EMF sources.
• Find hot-spot and RF penetration points to your house.
• Find a safe distance from LFE and LFM sources.
• Test EMF protection.
• Can detect RF sources like: WIFI, DECT, WIMAX, LTE, UMTS, CDMA, GSM, BLUETOOTH, ZIGBEE, Cell phone mast/antenna ( 2G,3G,4G, low bang 5G), Smart meters, Radar, Microwave ovens, wireless PC and Tablets, routers and other RF sources.
• Can detect ELF sources like: Power lines, power converters, electric infrastructure, power cabinets and fuse boxes, electric motors, electric components in cars, electric appliances, electronic appliances, and more…

Price and Delivery options

• Shipped from Israel
• Tax may be subject to according to your country’s laws
• למזמינים לישראל, יש להזמין מהאתר הישראלי, לחצו כאן…

The package contains:

• ENV RD-100 meter
• English User Manual
• Case

Who is the seller?

• We are!

More info and links about the ENV RD-100 EMF meter

• Manufacture site (Manual, PC drivers, Monitoring software for PC, Monitoring software for Android) – http://www.envirosens.com/

Downloads

• Download PC USB driver  (in case win does not auto detect):  https://www.envirosens.com/software/CDM2123620_Setup.zip
• Download PC monitor software: http://www.envirosens.com/software/Monitoring.zip
• Download Android (4.3 and higher) monitor software: http://www.envirosens.com/software/ENV_Monitor.apk
• Download Mac (intel based) – https://www.envirosens.com/software/Monitoring_Mac.zip

Technical specifications

• RF Frequency range: 100MHz to 8GHz
• RF Refresh Rate 2/sec
• RF Sampling Rate 20000/0.5sec (40000/Sec)
• RF measuring range: 0.0001 mW/m¨ – 1650 mW/m¨
• RF typical accuracy: ±6 dB
• RF info displayed: Peak Value, Average (last 60 seconds), Max, Duty Cycle, Last 60 seconds Peak/time graph.
• RF technologies: Analog RF and Digital burst RF (GSM, TDMA, CDMA, LTE,
  DECT, ZigBee, Bluetooth, UWB, Wi-Fi, WiMAX 2.4GHz, 3.6GHz,
  5.8GHz, 2G,3G,4G, low bang 5G).
• LFM measuring range: 0.1mG – 50mG
• LFM accuracy: 20%
• LFM (magnetic field)
• LFM Frequency range: 30Hz to 25KHz
• LFM info displayed: Peak Value, Max, Frequency, Last 60 seconds Peak/time graph.
• LFM Refresh Rate 3/sec
• LFM Sampling Rate 5000/0.333sec (15000/sec)
• LFE measuring range: 1V/m-600V/m
• LFE accuracy: 25%
• LFE (electric field) Frequency 40 Hz-10 KHz
• LFE info displayed: Peak Value, Max, Frequency, Last 60 seconds Peak/time graph.
• LFE Refresh Rate 3/sec
• LFE Sampling Rate 5000/0.333sec (15000/sec)
• RF Modulation mode – Time length displayed on graph
• RF Modulation mode time length of the signal displayed = 0.5 sec or 0.1 sec, Each dot on the graph represents 5 ms, or 1 ms
• RF Modulation mode also displays Peak value and Duty cycle in this mode.
• RF Modulation mode Refresh Rate, the meter displays the signal when captured.
• In RF Modulation mode, the signal is displayed until the next signal is captured.  This means that in this mode the meter is not “Real Time”.
• RF Modulation mode Sampling Rate 5 ms = 60000/sec, 1 ms mode = 100000/sec
• Joint mode – Refresh Rate in Joint mode RF, LFM, & LFE = 2/sec (updates every 0.5 sec)
• Joint mode  – Displaying only peak values in this mode.
• Joint Mode Sampling Rate
  RF = 10000/sec
  LFM = 4000/sec
  LFE = 4000/sec
• Batteries 2 x AA, Expected working time Up to 20 hours using new alkaline batteries
• USB power supply continues operation, without charging.
• USB data cable will allow operation of monitoring software on PC/MAC/Android, and software version update software on PC.
• USB data cable + Android phone, Capable of using Android phone software and GPS receiver to scan large areas and export measurement and GPS data to Google maps.

Videos of ENV RD-100

Unboxing and explanation (03/2025) –  https://youtu.be/8ZiWwR-FsEY

Scanning 2 houses with the ENV RD-100 in JOINT MODE –  https://youtu.be/pBwvjKJZg_A

Scanning 2 house with the ENV RD-100 in RF Mode – https://youtu.be/viYjhv0__SU

Coming Soon (02/2025) –  https://youtu.be/Sd-Usl3UONg

The post ENV RD-100 EMF Meter appeared first on For EHS By EHS.

Before booking this meeting please try to find the info you are looking in our Q&A page, both on this store site and on our info site https://www.norad4u.com/question-answers/

Please also see our guides page – https://www.4ehsbyehs.com/emf-ehs-guides/

Example subjects:

• Types of EMF
• Measurement of EMF
• Reducing exposure
• EMF Protection (home/office/personal)
• Handling EHS
• Product selection

The post 20 MINUTES ZOOM MEETING/CALL appeared first on For EHS By EHS.

You have already read all there is to read on our info site www.norad4u.com, you have gone over our guides page, or you can’t find time to read and have specific questions? Want to get special info, need help with measuring EMF or choosing the right EMF protection? Needs EMF tech support? We will meet on skype and I will do my best to guide you through in-person.

After peruse we will get in touch via email and set up the time for the skype video conversation.

In our 1X1 skype talk we can talk about:

1. Types of EMF
2. Recommended meters and way
3. Exposure reduction techniques
4. EMF protection products
5. How to use EMF protection
6. How to handle EHS
7. Which product to buy

Before ordering an EMF Technical support, please see our lectures below: Link – https://youtu.be/fkCo0lR3Z70

Please see more video lectures at – https://www.norad4u.com/video/original-video-lectures-about-emf-and-ehs/

The post 60 MINUTES ZOOM MEETING/CALL appeared first on For EHS By EHS.