RF Exposure Info

FCC ID: 2AMIN-SXJ02ZM

RF Exposure Info

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FCCID_4061738

Report No.: C180521R04 Page 1 of 3 RADIO FREQUENCY EXPOSURE LIMIT 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 § 1.1307(b) of this chapter. EUT Specification EUT Mi Home Security Camera Basic 1080P WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.15GHz ~ 5.25GHz WLAN: 5.25GHz ~ 5.35GHz Frequency band WLAN: 5.47GHz ~ 5.725GHz (Operating) WLAN: 5.725GHz ~ 5.85GHz Bluetooth: 2.402GHz ~ 2.480GHz Others Portable (<20cm separation) Device category Mobile (>20cm separation) Others Occupational/Controlled exposure (S = 5mW/cm2) Exposure classification General Population/Uncontrolled exposure (S=1mW/cm2) Single antenna Multiple antennas Antenna diversity Tx diversity Rx diversity Tx/Rx diversity WIFI:2.412-2.462GHz IEEE 802.11b mode: 17.36dBm Max. Average IEEE 802.11g mode: 10.82dBm Output power IEEE 802.11n HT20 mode: 9.97dBm IEEE 802.11n HT40 mode: 9.81dBm Antenna gain (Max) PCB antenna Gain: 1.79 dBi MPE Evaluation* Evaluation applied SAR Evaluation N/A Remark: 1. The maximum output power is 17.36dBm (54.450mW) at 2412MHz (with 1.510 numeric antenna gain.) 2. DTS device is not subject to routine RF evaluation; MPE estimate is used to justify the compliance. 3. For mobile or fixed location transmitters, no SAR consideration applied. The maximum power density is 1.0 mW/cm2 even if the calculation indicates that the power density would be larger.

Report No.: C180521R04 Page 2 of 3 TEST RESULTS No non-compliance noted. Calculation 30  P  G E2 Given E & S d 3770 Where E = Field strength in Volts / meter P = Power in Watts G = Numeric antenna gain d = Distance in meters S = Power density in milliwatts / square centimeter Combining equations and re-arranging the terms to express the distance as a function of the remaining variables yields: 30  P  G S 3770d 2 Changing to units of mW and cm, using: P (mW) = P (W) / 1000 and d (cm) = d(m) / 100 Yields 30  P / 1000  G PG S  0.0796  2 Equation 1 3770  d / 100 2 d Where d = Distance in cm P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Maximum Permissible Exposure Substituting the MPE safe distance using d = 20 cm into Equation 1: Yields S  0.000199  P  G Where P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2

Report No.: C180521R04 Page 3 of 3 For WLAN: Power Frequency Max. tune up Antenna Distance Limit Modulation Mode density band (MHz) power(dBm) gain (dBi) (cm) (mW/cm2) (mW/cm2) IEEE802.11b 17.5 1.79 20 0.0169 1 IEEE802.11g 11 1.79 20 0.0038 1 2412-2462 IEEE802.11 n(20MHz) 10 1.79 20 0.0030 1 IEEE802.11 n(40MHz) 10 1.79 20 0.0030 1 Note: Only WLAN can transmit, the formula of calculated the MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density WLAN =0.0169mW/cm2 (For mobile or fixed location transmitters, the maximum power density is 1.0 mW/cm2 even if the calculation indicates that the power density would be larger.)


Document Created: 2019-09-18 11:22:01
Document Modified: 2019-09-18 11:22:01
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