# The Wireless Telegraphy (Short Range Devices) (Exemption) Regulations 1993, Paragraph 4: Fixed Alarms


Wireless telegraphy apparatus designed or adapted—
(a) for the transmission of non-verbal signals to wireless telegraphy receiving apparatus installed in or upon a building in order to activate an alarm; and
(b) so as to be capable of use only on one of the frequencies and at a power not exceeding the maximum for such frequencies, specified in the table below—
Frequencies
Maximum power erp
173.225 MHz
10 mW
458.825 MHz
100 mW

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Source: https://www.legislation.gov.uk/uksi/1993/1591/schedule/paragraph/4 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-short-range-devices-exemption-regulations-1993/schedule/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.