# The Wireless Telegraphy (Exemption) Regulations 1999, Paragraph 18: Alarms: Mobile and transportable and lone worker safety


Wireless telegraphy apparatus designed or adapted–
(a) to generate or indicate an alarm condition; or
(b) to arm or disarm the alarm system,
so as to be capable of use on one or more of the frequencies, and at a radiated level not exceeding the maximum for such frequencies, specified in the table below–
Frequencies or frequency band
Radiated level
Channel bandwidth
Music or speech permitted
ETSI standard
173.1875 MHz
10 mW erp
12.5 kHz
No
EN 300 220–1
458.8375 MHz
100 mW erp
12.5 kHz
No

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Source: https://www.legislation.gov.uk/uksi/1999/930/schedule/6/paragraph/18 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-exemption-regulations-1999/schedule-6/paragraph-18
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.