RF EXPOSURE EVALUATION
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18 H61C5 RFExp
Shenzhen Qianyan Technology LTD H61C3 Govee RGBIC LED Neon Rope Light for desks 2A7VD-H61C3 2A7VDH61C3 h61c3
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Document DEVICE REPORTGetApplicationAttachment.html?id=6683660RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) FCC ID: 2A7VD-H61C3 EUT Specification EUT Frequency band (Operating) Device category Exposure classification Antenna diversity Max. output power Antenna gain (Max) Evaluation applied Govee RGBIC LED Neon Rope Light for desks WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.24GHz WLAN: 5.745GHz ~ 5.825GHz Others: BLE: 2.402GHz~2.480GHz Portable (<20cm separation) Mobile (>20cm separation) Others ___ Occupational/Controlled exposure General Population/Uncontrolled exposure Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity BLE: 6.01dBm (0.0040W) WIFI 2.4G: 18.46dBm (0.0701W) BLE: 4.51 dBi WiFi 2.4G: 3.85 dBi MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Frequency Electric Field Magnetic Field Power Range(MHz) Strength(V/m) Strength(A/m) Density(mW/cm2) (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 1500-100000 -- -- 5 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 1500-100000 -- -- 1 Average Time 6 6 30 30 Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/cm2 Pout=output power to antenna in Mw G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Max Measurement Result Operating Mode Measured Power (dBm) BLE 6.01 WiFi 2.4G 18.46 Tune up tolerance (dBm) 6.01 ±1 18.46 ±1 Max. Tune Antenna Power density up Power Gain at 20cm (dBm) (dBi) (mW/cm2 ) 7.01 4.51 0.0028 19.46 3.85 0.0427 Power density Limits (mW/cm2 ) 1 1 The WLAN 2.4G and BLE can transmit simultaneously: =SWIFI2.4/Slimit-2.4+ SBLE/Slimit-BLE =0.0028/1+0.0427/1 =0.0455 < 1.0
Related FCC IDs:
- 2A7VD-H61C3 - Shenzhen Qianyan Technology LTD Govee RGBIC LED Neon Rope Light for desks [-H61C3] WPS 文字