18_IoTBOX-3288M RFExp r1

FCC ID: 2AITM-IOTBOX-3288M

RF Exposure Info

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FCCID_4101531

Dongguan Nore Testing Center Co., Ltd.
Report No.: NTC1808288FV-01
FCC ID: 2AITM-IOTBOX-3288M

RF EXPOSURE EVALUATION

EUT Specification
EUT IoTBOX-3288M
Frequency band WLAN: 2.412GHz ~ 2.462GHz
(Operating) WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz
WLAN: 5.745GHz ~ 5825GHz
Others(Bluetooth: 2.402GHz ~ 2.480GHz)
Device category Portable (<20cm separation)
Mobile (>20cm separation)
Others ___
Antenna diversity Single antenna
Multiple antennas
Tx diversity
Rx diversity
Tx/Rx diversity
Max. output power 13.28 dBm (21.281mW) for WIFI
1.162 dBm (1.307mW) for BLE
Antenna gain 3.5 dBi for BT & WIFI
Evaluation applied MPE Evaluation
SAR Evaluation

Limits for Maximum Permissible Exposure (MPE)

Frequency Electric Field Magnetic Field Power Density(mW/cm2)
Range(MHz) Strength(V/m) Strength(A/m)
300-1500 -- -- F/1500
1500-100000 -- -- 1

$Dongguan Nore Testing Center Co., Ltd. Report No.: NTC1808288FV-01 FCC ID: 2AITM-IOTBOX-3288M Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/cm2 Pout=output power to antenna in Mw G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE, 1mW/cm2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result Channel Gain Channel Max Output Tolerance Max Power Power Frequency power (dBm) Tune-UP density at density (MHz) power 20cm Limits (mW) (mW/ cm2 ) (mW/cm2 ) Test Mode: BLE Low 3.5 2402 0.719 ±0.5 1.324 0.0006 1 Middle 3.5 2440 1.090 ±0.5 1.442 0.0006 1 High 3.5 2480 1.162 ±0.5 1.466 0.0007 1$

Dongguan Nore Testing Center Co., Ltd.
Report No.: NTC1808288FV-01
FCC ID: 2AITM-IOTBOX-3288M

Channel Gain Channel Max Output Tolerance Max Power Power
Frequency power (dBm) Tune-UP density at density
(MHz) power 20cm Limits
(mW) (mW/ cm2 ) (mW/cm2 )
Test Mode: 802.11b
Low 3.5 2412 13.28 ±0.5 23.878 0.0106 1
Middle 3.5 2437 13.09 ±0.5 22.856 0.0102 1
High 3.5 2462 12.96 ±0.5 22.182 0.0099 1
Test Mode: 802.11g
Low 3.5 2412 10.29 ±0.5 11.995 0.0053 1
Middle 3.5 2437 10.11 ±0.5 11.508 0.0051 1
High 3.5 2462 10.18 ±0.5 11.695 0.0052 1
Test Mode: 802.11n(HT20)
Low 3.5 2412 9.34 ±0.5 9.638 0.0043 1
Middle 3.5 2437 9.22 ±0.5 9.376 0.0042 1
High 3.5 2462 9.37 ±0.5 9.705 0.0043 1
Test Mode: 802.11n(HT40)
Low 3.5 2422 8.15 ±0.5 7.328 0.0033 1
Middle 3.5 2437 7.90 ±0.5 6.918 0.0031 1
High 3.5 2452 7.98 ±0.5 7.047 0.0031 1

Document Created: 2018-12-10 20:21:04
Document Modified: 2018-12-10 20:21:04