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4
4.4.10. Alarm Sound: 22
4.4.11. Information: 23
5 Specifications ................................................. 25
5.1 Sensor type: LF Magnetic Fields (MF) .............. 25
5.2 Sensor type: LF Electric Fields ......................... 25
5.3 Sensor type: RF Strength ................................. 27
6 Battery replacement ....................................... 29
7 External USB power supply: ........................... 30
8 Safety and maintenance standards ................ 31
9 End of life ....................................................... 32