EUT TPE：Subclass of Class 1_20_Non-specific short range devices_433.050 - 434.790 MHz
RF STD：Appendix 2_Table 16@EN 300 220-2_Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices (SRD); Radio equipment to be used in the 25 MHz to 1000 MHz frequency range with power levels ranging up to 500 mW@RED_Article 3(2)_Radio
EMC Std：Article 3(1)(b)_EMC_ETSI EN 301 489-3 V2.1.1 (2019-03)_Part 3: Specific conditions for Short-Range Devices (SRD) operating on frequencies between 9 kHz and 246 GHz
Health ：Article 3(1)(a)_Health_Cenelec_EN 50360:2017_Publication Product standard to human exposure to electromagnetic fields in the frequency range from 300 MHz to 6 GHz: devices used next to the ear
Safety：Article 3(1)(a)_Safety_Cenelec_EN 62368-1:2014_Audio/video_ information and communication technology equipment - Part 1: Safety requirements
RF MOD：WIRELESS CONNECTIVITY_Bluetooth® ≥4.0_Band (in MHz)_2400 to 2483.5
Appendix 2_Table 16@EN 300 220-2_Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices (SRD); Radio equipment to be used in the 25 MHz to 1000 MHz frequency range with power levels ranging up to 500 mW@RED_Article 3(2)_Radio
Article 3(1)(b)_EMC_ETSI EN 301 489-3 V2.1.1 (2019-03)_Part 3: Specific conditions for Short-Range Devices (SRD) operating on frequencies between 9 kHz and 246 GHz
Article 3(1)(a)_Health_Cenelec_EN 50360:2017_Publication Product standard to human exposure to electromagnetic fields in the frequency range from 300 MHz to 6 GHz: devices used next to the ear
