NEN EN 50291 : 2001

1 Scope
2 Normative references
3 Definitions
4 General requirements
  4.1 General
  4.2 Construction
  4.3 Indicators and alarms
  4.4 Fault signals
  4.5 Output signal (applicable for type A apparatus only)
  4.6 Labelling and instructions
5 Test and performance requirements
  5.1 General requirements for tests
  5.2 Normal conditions for tests
  5.3 Test methods and performance requirements
6 Self-contained battery powered apparatus
  6.1 Battery fault warning
  6.2 Battery capacity
  6.3 Battery reversal
  6.4 Battery connections
Annex A (informative) Health effects
Annex B (informative) A-deviations

Describes the general requirements for the construction, testing and performance of electrically operated carbon monoxide gas detection apparatus, designed for continuous operation in domestic premises. The apparatus may be main or battery powered. Such apparatus is intended to warn of an accumulation of CO, enabling the occupant to react before being exposed to significant risk.