RF exposure

FCC ID: YMX-EC806H

RF Exposure Info

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FCCID_4308532

1. MAXIMUM PERMISSIBLE EXPOSURE (MPE)

1.1 General Information

Client Information
Applicant: XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO., LTD
(5/F) NO.168, QIANPU ROAD, SIMING DISTRICT, XIAMEN,
Address of applicant:
CHINA

Manufacturer: XIAMEN HEALTHCARE ELECTRONIC CO.,LTD.
Address of manufacturer: 65-66#, 62-63# BUILDING, SIMING ZONE, TONGAN
INDUSTRIAL DISTRICT, XIAMEN CITY, FUJIAN
PROVINCE, P.R.CHINA
General Description of EUT:
Product Name: Massage Chair
Trade Name: /
Model No.: EC-806H, Osaki Pro Maestro H
FCC ID: YMX-EC806H
Rated Voltage: AC 110-120V/60Hz

Technical Characteristics of EUT:
Bluetooth Version: V4.0
Frequency Range: 2402-2480MHz
RF Output Power: 5.98dBm (Conducted)
Data Rate: 1Mbps, 2Mbps, 3Mbps
Modulation: GFSK, Pi/4 QDPSK, 8DPSK
Quantity of Channels: 79/40
Channel Separation: 1MHz/2MHz
Type of Antenna: Chip Antenna
Antenna Gain: 2dBi

1.2 Standard Applicable

According to §1.1307(b)(1) and KDB 447498 D01 General RF Exposure Guidance v06, system operating under
the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency
energy level in excess limit for maximum permissible exposure.

(a) Limits for Occupational / Controlled Exposure

Electric Field Magnetic Field Averaging Times
Frequency range Power Density
Strength (E) Strength (H) | E |2, | H |2 or
(MHz) (S) (mW/cm2)
(V/m) (A/m) S (minutes)
0.3-3.0 614 1.63 (100)* 6
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
1500-100000 / / 5 6

(b) Limits for General Population / Uncontrolled Exposure

Electric Field Magnetic Field Averaging Times
Frequency range Power Density
Strength (E) Strength (H) | E |2, | H |2 or
(MHz) (S) (mW/cm2)
(V/m) (A/m) S (minutes)
0.3-1.34 614 1.63 (100)* 30
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
1500-100000 / / 1 30
Note: f = frequency in MHz: * = Plane-wave equivalents power density

1.3 MPE Calculation Method

S = (30*P*G) / (377*R2)
S = power density (in appropriate units, e.g., mw/cm2)
P = power input to the antenna (in appropriate units, e.g., mw)
G = power gain of the antenna in the direction of interest relative to an isotropic radiator,
the power gain factor is normally numeric gain.
R = distance to the center of radiation of the antenna (in appropriate units, e.g., cm)

1.4 MPE Calculation Result

Maximum Tune-Up output power: 6 (dBm)
Maximum peak output power at antenna input terminal: 3.98 (mW)
Prediction distance: >20(cm)
Prediction frequency: 2480 (MHz)
Antenna gain: 2 (dBi)
Directional gain (numeric gain): 1.58
The worst case is power density at prediction frequency at 20cm: 0.0013(mw/cm2)
MPE limit for general population exposure at prediction frequency: 1 (mw/cm2)

Result: Pass

Document Created: 2019-06-05 11:39:33
Document Modified: 2019-06-05 11:39:33

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