RF Exposure

FCC ID: 2ATV2-WMBR-1

RF Exposure Info

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FCCID_4383742

FCC ID: 2ATV2-WMBR-1

RF Exposure Evaluation
LIMIT
The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio
frequency (RF) radiation as specified in 1.1307(b)
Limits for Maximum Permissible Exposure (MPE)
Electric field
Frequency range Magnetic field strength Power density Averaging time
strength 2
(MHz) (A/m) (mW/cm ) (minutes)
(V/m)
(A) Limits for Occupational/Controlled Exposures
0.3–3.0 614 1.63 *(100) 6
2
3.0–30 1842/f 4.89/f *(900/f ) 6
30–300 61.4 0.163 1.0 6
300–1500 - - f/300 6
1500–100,000 - - 5 6
(B) Limits for General Population/Uncontrolled Exposure
0.3–1.34 614 1.63 *(100) 30
2
1.34–30 824/f 2.19/f *(180/f ) 30
30–300 27.5 0.073 0.2 30
300–1500 - - f/1500 30
1500–100,000 - - 1.0 30
Note: f = frequency in MHz

EVALUATION METHOD
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

TEST RESULT

Passed Not Applicable

FCC ID: 2ATV2-WMBR-1

RF Maximum
Power Density Limit
specification Type conducted output Result
(mW/cm2) (mW/cm2)
power(dBm)
2.4G WiFi 802.11n(HT20) 19.96 0.01971 1.0000 Pass
5G WiFi 802.11ac(HT20) 18.61 0.01445 1.0000 Pass
5.8G SRD 802.11ac(HT20) 18.51 0.01412 1.0000 Pass
Bluetooth BLE 12.79 0.00378 1.0000 Pass

RF Field strength of Maximum Power Density
Limit (mW/cm2) Result
specification fundamental(dBμV/m) ERIP(dBm) (mW/cm2)

Z-wave 93.01 -2.22 0.00012 0.6056 Pass

Note:
1) The maximum antenna gain for WiFi and Bluetooth are 2.00dBi. The maximum antenna gain for Z-wave is 3.00dBi.
2) EIRP[dBm] = E[dBμV/m] + 20 log (d[m]) − 104.77，d=3.
3) The exposure safety distance is less than 20cm.

Document Created: 2019-07-17 13:58:57
Document Modified: 2019-07-17 13:58:57

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