
Designed by a Telecom Engineer.
DefenderShield was founded by Daniel T. DeBaun, a 30-year veteran of the telecommunications industry. Every product is engineered using shielding principles from military and industrial EMF protection, adapted for consumer devices.
Frequency Ranges Explained
ELF
60 to 300 Hz
Extremely Low Frequency Fields
Electronic device batteries (phone, laptop, tablet)
RF
0.4 to 40 GHz
Radiofrequency Fields
Cellular, WiFi, Bluetooth, wireless devices, 4G, some 5G
MMWAVE/5G
26.5 to 40 GHz
mmWave 5G Fields
5G enabled devices, advanced wireless networks
Signal ranges may vary by device, carrier, router, location, and environment.
| Band | Frequency | Shielding Effectiveness | Percent Blocked |
|---|---|---|---|
| ELF | 60 to 300 Hz | 48 to 61 dB | 99.6% to ≥99.9% |
| RF Low | 0.4 to 6 GHz | 50 dB | 99.7% |
| RF Mid | 2 to 32 GHz | 51 to 70 dB and 60 to 100 dB | 99.7% to ≥99.9% |
| RF High / 5G | 26.5 to 40 GHz | 79 dB | ≥99.9% |
ELF Shielding Effectiveness
60 to 300 Hz
RF Shielding Effectiveness
0.4 to 40 GHz
Results based on independent third party laboratory testing of DefenderShield shielding materials.
