Jenn Warnell

RF Exposure MPE

Snap One, LLC CORE5 2AJAC-CORE5 2AJACCORE5 core5

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Compliance Test Services

623 E. 100 S., Salt Lake City, UT 84102

Maximum Permissible Exposure

Test Requirement(s):

§15.247 (h)(i): Radio frequency devices operation under the provisions of this part
are subject to the radio frequency radiation exposure requirements specified in §1.1307(b), §1.1310, §2.1091 and §2.1093 of this chapter, as appropriate. All equipment shall be considered to operate in a "general population/uncontrolled" environment.

RF Exposure Requirements:

§1.1307(b)(1) and §1.1307(b)(2): 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.

RF Radiation Exposure Limit:

§1.1310: As specified in this section, the Maximum Permissible Exposure (MPE) Limit shall be used to evaluate the environmental impact of human exposure to radiofrequency (RF) radiation as specified in Sec. 1.1307(b), except in the case of portable devices which shall be evaluated according to the provisions of Sec. 2.1093 of this chapter.

MPE Limit: EUT's operating frequencies @ Zwave 908 ­ 916 MHz: Zigbee 2405 ­ 2474 MHz; Limit for Uncontrolled exposure: 0.611 mW/cm2 or 6.11 W/m2

The relevant KDB for RF Exposure is KDB 447498.

S = PG / 4R2 or R = (PG / 4S)

where, S = Power Density (mW/cm2) P = Power Input to antenna (mW) G = Antenna Gain (numeric value) R = Distance (cm)

Test Results:

Frequency Con. Pwr. (MHz) (dBm)

2440* (Zigbee)
916 (ZWave)
912* (Zwave-
LR)
2412* (WiFi)
5180 (WiFi)

14.4 -11.1 11.14 14.35 7.32

Con. Pwr. (mW) 27.54 0.078
13.0
27.23 5.40

Ant. Gain (dBi) 2.7 2.0
2.0
0.1 4.7

FCC Pwr.
Ant. Gain Density numeric (mW/cm2)

1.86

0.04

1.59

0.00

1.59

0.02

1.02

0.02

2.95

0.01

Limit (mW/cm2)
1.0 0.611
1.0
1.0 1.0

Margin
-0.96 -0.611 -0.98 -0.98 -0.99

Distance (cm) 10 10
10
10 10

Result
Pass Pass Pass Pass Pass

* Simultaneous Transmission (Worst Case)

0.08

0.611

-0.531

10

Pass

The safe distance for 2AJAC-CORE5 where Power Density is less than the MPE Limit listed above was found to be 10 cm.

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