RF Exposure Evaluation
Device Information
- FCC ID: 2AFKR-ZEALOT-M1
- Product Name: Wireless Speaker
- Model No.: ZEALOT-M1
- Listed Model(s): ZEALOT-S1, ZEALOT-S32, ZEALOT-S32pro, ZEALOT-S49, ZEALOT-S49pro, ZEALOT-S85, ZEALOT-S89, ZEALOT-S87, ZEALOT-ZE21, ZEALOT-S53, ZEALOT-S79, ZEALOT-S76, ZEALOT-P12, ZEALOT-S66, ZEALOT-S97, ZEALOT-S98
- Exposure category: General population/uncontrolled environment
- EUT Type: Production Unit
- Device Type: Portable Device
References
The evaluation is based on the following standards and publications:
- ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz.
- FCC KDB publication 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies.
- FCC CFR 47 part1 1.1310: Radio frequency radiation exposure limits.
- FCC CFR 47 part2 2.1093: Radio frequency radiation evaluation: portable devices
Requirement
According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations, standalone 1-g head or body and 10-g extremity SAR evaluation is not required for general population exposure conditions when the corresponding SAR Test Exclusion Threshold condition is satisfied. These conditions are based on source-based time-averaged maximum conducted output power, adjusted for tune-up tolerance, and the minimum test separation distance.
The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device to any part of the body or extremity of a user or bystander.
To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions.
The SAR test exclusion formula is:
[(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 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 thresholds 3.0 and 7.5 are used.
Test exclusions are applicable when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. If the minimum test separation distance is < 5 mm, a distance of 5 mm is applied.
For simultaneous transmission configurations, further equipment approval is not required if one of the following conditions is satisfied:
- a) The sum of (measured or estimated SAR for each standalone antenna configuration, adjusted for maximum tune-up tolerance) / 1.6 W/kg plus the sum of MPE ratios is ≤ 1.0.
- b) The SAR to peak location separation ratios of all simultaneously transmitting antenna pairs operating in portable device exposure conditions are all ≤ 0.04, and the sum of MPE ratios is ≤ 1.0.
Conducted Peak Output Power
| Modulation | Packet Type | Channel | Peak Output Power (dBm) | Peak Output Power (mW) |
|---|---|---|---|---|
| GFSK | DH5 | 0 | -0.20 | 0.95 |
| GFSK | DH5 | 39 | -0.20 | 0.95 |
| GFSK | DH5 | 78 | 0.57 | 1.14 |
| π/4DQPSK | 2-DH5 | 0 | 0.64 | 1.16 |
| π/4DQPSK | 2-DH5 | 39 | 0.71 | 1.18 |
| π/4DQPSK | 2-DH5 | 78 | 1.44 | 1.39 |
| 8DPSK | 3-DH5 | 0 | -0.20 | 0.95 |
| 8DPSK | 3-DH5 | 39 | -0.13 | 0.97 |
| 8DPSK | 3-DH5 | 78 | 0.58 | 1.14 |
Manufacturing Tolerance
BR/EDR
DH5
| Channel | Channel 0 | Channel 39 | Channel 78 |
|---|---|---|---|
| Target (dBm) | 0 | 0 | 0 |
| Tolerance ±(dB) | 1.0 | 1.0 | 1.0 |
2DH5
| Channel | Channel 0 | Channel 39 | Channel 78 |
|---|---|---|---|
| Target (dBm) | 0 | 0 | 1 |
| Tolerance ±(dB) | 1.0 | 1.0 | 1.0 |
3DH5
| Channel | Channel 0 | Channel 39 | Channel 78 |
|---|---|---|---|
| Target (dBm) | 0 | 0 | 0 |
| Tolerance ±(dB) | 1.0 | 1.0 | 1.0 |
Evaluation Result
| Band/Mode | f (GHz) | Antenna Distance (mm) | RF output power (dBm) | RF output power (mW) | SAR Test Exclusion Threshold | SAR Test Exclusion |
|---|---|---|---|---|---|---|
| BR/EDR | 2.480 | 5 | 2 | 1.58 | 0.4992<3.0 | Yes |
Remark:
- Output power including tune up tolerance.
- When the minimum test separation distance is < 5 mm, a distance of 5 mm according to f) in section 4.1 is applied to determine SAR test exclusion.
Conclusion
The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 D01V06.
