A CO detector sensor has a typical life of two to five years. Therefore, it is very important that regular tests are carried out to ensure the correct function of ageing alarms. The Detectagas® test kit enables safe and easy testing to be carried out. Gives a safe level of CO to create a test condition. Designed for all BS 7860 alarms, it will give 11 tests per can. Includes a reusable gas test shroud, stickers and instructions.