I am considering ordering an A50 with oxygen sensor, but I also want a relay for the Oxygen alarm, is this possible?


Yes, the A50 has the option of 2 relays, or if you decide to have an oxygen sensor fitted you still have the option of a single relay. The device can be configured to energise the relay in the event of either the CO2 alarm, O2 alarm or in the unlikely event of a device fault.