Analysis Report

FCC ID: ZY9-1201781

RF Exposure Info

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FCCID_3228807

Analysis Report
FCC ID: ZY9-1201781

The equipment under test (EUT) is a weather sensor operating at 433MHz. The EUT is
powered by 3.0VDC (2 x 1.5V "AA" batteries). The EUT will transmit RF signal to the
corresponding receiver and the receiver will display the humidity and temperature on the
screen.

Antenna Type: Internal, Integral
Antenna Gain: 0dBi
Nominal rated field strength: 84.6dBµV/m at 3m
Maximum allowed field strength of production tolerance: +/- 3dB

According to the KDB 447498:

Based on the Maximum allowed field strength of production tolerance was 87.6dBµV/m
at 3m in frequency 433MHz, thus;

The EIRP = [(FS*D) ^2*1000 / 30] = 0.17mW

Conducted power = Radiated Power (EIRP) – Antenna Gain
So;

Conducted Power = 0.17mW.

The SAR Exclusion Threshold Level:
= 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz)
= 3.0 * 5 / sqrt (0.433) mW
= 22.8 mW

Since the above conducted output power is well below the SAR Exclusion threshold level,
so the EUT is considered to comply with SAR requirement without testing.

Document Created: 2016-12-13 17:14:01
Document Modified: 2016-12-13 17:14:01

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