SZ-WTD01 FCC MPE Test Report

FCC ID: P27SZWTD01

RF Exposure Info

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FCCID_2095239

Compliance Certification Services Inc. Report No.: T130815D06 Date of Issue: October 01, 2013 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 ZigBee Water Sensor Trade Name SerComm / iControl / AT&T / Securifi SZ-WTD01xxxxxxxx(The “x” in model name can be 0 to 9, A Model Number to Z, blank or “-“ for marking purpose) Frequency band 2405 ~ 2480MHz (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 PCB Antenna, Gain: 2.18 dBi, (Numeric gain: 1.65) Specification Average output 17.92 dBm (61.944mW) power Modulation OPQSK (Offset Quadrature Phase Shift Keyed) Technique MPE Evaluation* Evaluation applied SAR Evaluation N/A Remark: The maximum output power is 17.92dBm (61.944mW) at 2445MHz (without 1.65 numeric antenna gain.) 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.: T130815D06 Date of Issue: October 01, 2013 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 377d 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 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.: T130815D06 Date of Issue: October 01, 2013 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 802.15.4 mode: Ch. Frq.(MHz) P (mW) Gain (num.) D (cm) Power density in mW / cm2 Limit (mW/cm2) 2 2445 61.944 1.65 20 0.0203 1 Page 3 Rev.00 This report shall not be reproduced except in full, without the written approval of Compliance Certification Services.


Document Created: 2013-10-01 17:33:32
Document Modified: 2013-10-01 17:33:32
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