You should not choose a CO detector solely on the basis of cost; do some research on the different features available.
All CO alarms should be tested with an external source of calibrated test gas.
All CO alarm sensors have a limited life and are susceptible to drift due to heat and humidity.
Sensors can be 'poisoned' by external substances such as cigarette smoke, cooking fumes, deodorants and hair spray.
If CO alarms fail within warranties, they should be replaced free of charge by the manufacturer.
Check at least once every six to twelve months with Detectagas.
"A silent CO alarm is a silent killer"
CO alarms should meet BSEN or UL standards.
