RF EXPOSURE EVALUATION

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RF Exposure

ADESSO INC. WKB-7300CB Wireless Keyboard 2ACFQ-WKB-7300CB 2ACFQWKB7300CB wkb 7300cb

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RF EXPOSURE EVALUATION FCC ID: 2ACFQ-WKB-7300CB

Product Name

: Wireless Keyboard

Model Name
Additional model
Model difference Operating frequency

: WKB-7300CB
WKB-7000BB,WKB-7010BB,WKB-7020BB,WKB-7030BB,WKB-7040BB, WKB-1340CB,WKB-1350CB,WKB-1360CB,WKB-1370CB,WKB-1380CB, WKB-7200CB,WKB-7210CB,WKB-7220CB,WKB-7230CB,WKB-7240CB, WKB-7300CB,WKB-7310CB,WKB-7320CB,WKB-7330CB,WKB-7340CB, WKB-7500CB,WKB-7510CB,WKB-7520CB,WKB-7530CB,WKB-7540CB, : WKB-7050BB,WKB-7060BB,WKB-7070BB,WKB-7080BB,WKB-7090BB, WKB-1390CB,WKB-1450UB,WKB-1450CB,WKB-6800CB,WKB-6900CB, WKB-7250CB,WKB-1210B ,WKB-1220CB,WKB-1230CB,WKB-1250CB, WKB-7350CB,WKB-7360CB,WKB-7370CB,WKB-7380CB,WKB-7390CB, WKB-7550CB,WKB-7560CB,WKB-7570CB,WKB-7580CB,WKB-7590CB Only the model name and shell color is different. The main test model is :
WKB-7300CB.
: 2408-2474MHz

Numbers of Channel : 34 channels For SRD

Antenna Type

: PCB Antenna

Antenna Gain

: 2.08 dBi

Type of Modulation Power supply Hardware Version

: GFSK
Li-ion Battery : 301850 : Rated Voltage: 3.7V
Capacity: 180mAh
: N/A

Software Version

: N/A

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Standard Requirement According to § 15.247(i) and § 1.1307b(1), 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 KDB 447498 D01 General RF Exposure Guidance v06, section 4. 3. 1. The 1-g and 10-g SAR test exclusion thresholds for 100MHz to 6GHz at test separation distances  50mm are determined by: [ (max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]*[ f(GHz)] 3.0 for 1-g SAR and 7.5 for 10-g SAR extremity SAR, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  The result is rounded to one decimal place for comparison. The test exclusions are applicable only when the minimum test separation distance is  50mm and for transmission frequencies between 100MHz and 6GHz. When the minimum test separation distance is <5mm, a distance of 5mm is applied to determine SAR test exclusion. Routine SAR evaluation refers to that specifically required by § 2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval.
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RF Output power
Freq. (MHz)

Field strength(max)(dBuV/m)

2441

91.86

Note: EIRP=E-104.8+20logD, Where
E is the electric field strength in dBV/m. EIRP is the equivalent isotropically radiated power in dBm. d is the specified measurement distance in m. where D=3, EIRP=E-95.2.

EIRP (max) (dBm)
-3.94

Channel (MHz)
2474

Maximum output power (dBm)
-3.94

Tune up tolerance
(dBm)
-3.94±1

Max Tune Up Power
(mW)

Distance Calculation (mm) results

Limit

0.508159

5

0.159856 3

Operating Mode
SRD

According to KDB 447498, no stand-alone required for SRD antenna, and no simultaneous SAR measurement is required. Signature
Simon Pu Manager Date: 2024-06-03

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