MPE

FCC ID: KA2WR712C1

RF Exposure Info

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FCCID_2254061

Compliance Certification Services Inc. Report No.: T131017N91-MF Date of Issue: April 25, 2014 APPENDIX I RADIO FREQUENCY EXPOSURE LIMIT According to §15.247(i), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission's guidelines. See § 1.1307(b)(1) of this chapter. EUT Specification EUT HSPA+ 3G SOHO Router Model DWR-712 RF Module MediaTek Model: RT5350 802.11b/g/n HT20: 2.412GHz ~ 2.462GHz Frequency band 802.11n HT40: 2.422GHz ~ 2.452GHz (Operating) Others Portable (<20cm separation) Device category Mobile (>20cm separation) Others Occupational/Controlled exposure (S = 5mW/cm2) Exposure General Population/Uncontrolled exposure classification (S=1mW/cm2) Antenna Antenna Gain (2.4GHz) 3.39 dBi (Numeric gain: 2.18) Specification IEEE 802.11b Mode : 15.49 dBm (35.400 mW) Maximum Average IEEE 802.11g Mode : 16.74 dBm (47.206 mW) output power IEEE 802.11n HT20 Mode : 15.05 dBm (31.989 mW) IEEE 802.11n HT40 Mode : 14.54 dBm (28.445 mW) IEEE 802.11b Mode : 16.49 dBm (44.566 mW) Maximum IEEE 802.11g Mode : 17.74 dBm (59.429 mW) Tune up Power IEEE 802.11n HT20 Mode : 16.05 dBm (40.272 mW) IEEE 802.11n HT40 Mode : 15.54 dBm (35.810 mW) MPE Evaluation* Evaluation applied SAR Evaluation N/A Page 1 Rev.00 This report shall not be reproduced except in full, without the written approval of Compliance Certification Services.

Compliance Certification Services Inc. Report No.: T131017N91-MF Date of Issue: April 25, 2014 Revision History Rev. Issue Date Revisions Effect Page Revised By 00 April 25, 2014 Initial Issue ALL Eva Lin Page 2 Rev.00 This report shall not be reproduced except in full, without the written approval of Compliance Certification Services.

Compliance Certification Services Inc. Report No.: T131017N91-MF Date of Issue: April 25, 2014 TEST RESULTS No non-compliance noted. Calculation 30 × P × G E2 Given E= & S= d 377 Where E = Field strength in Volts / meter P = Power in Watts G = Numeric antenna gain d = Distance in meters S = Power density in milliwatts / square centimeter Combining equations and re-arranging the terms to express the distance as a function of the remaining variables yields: 30 × P × G S= 377 d 2 Changing to units of mW and cm, using: P (mW) = P (W) / 1000 and d (cm) = d(m) / 100 Yields 30 × (P / 1000) × G P×G S= = 0.0796 × Equation 1 377 × (d / 100) 2 d2 Where d = Distance in cm P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Page 3 Rev.00 This report shall not be reproduced except in full, without the written approval of Compliance Certification Services.

Compliance Certification Services Inc. Report No.: T131017N91-MF Date of Issue: April 25, 2014 Maximum Permissible Exposure Substituting the MPE safe distance using d = 20 cm into Equation 1: S = 0.000199 × P × G Where P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 IEEE 802.11b mode: Ch. Frq.(MHz) P (mW) Gain (num.) D (cm) Power density in mW / cm2 Limit (mW/cm2) Result 1 2412 44.566 2.18 20 0.0193 1 Pass IEEE 802.11g mode: Ch. Frq.(MHz) P (mW) Gain (num.) D (cm) Power density in mW / cm2 Limit (mW/cm2) Result 1 2412 59.429 2.18 20 0.0258 1 Pass IEEE 802.11n HT20 mode: Ch. Frq.(MHz) P (mW) Gain (num.) D (cm) Power density in mW / cm2 Limit (mW/cm2) Result 1 2412 40.272 2.18 20 0.0175 1 Pass IEEE 802.11n HT40 mode: Ch. Frq.(MHz) P (mW) Gain (num.) D (cm) Power density in mW / cm2 Limit (mW/cm2) Result 6 2437 35.81 2.18 20 0.0155 1 Pass Page 4 Rev.00 This report shall not be reproduced except in full, without the written approval of Compliance Certification Services.


Document Created: 2014-04-25 11:23:36
Document Modified: 2014-04-25 11:23:36
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