This Part of EN 12259 specifies requirements for construction and performance of water motor alarms for use in conjunction with alarm valves conforming to EN 12259-2, EN 12259-3 and EN 12259-9 used in automatic sprinkler systems complying with EN 12845 and water spray systems conforming to the relevant European Standard. Type approval tests and a recommended test schedule for type approval testing are also given. Auxiliary components or attachments to water motor alarms are not covered by this Part of EN 12259.