FireProtect 2 (Heat/Smoke/CO) Jeweller is a wireless fire detector with a built-in siren. Designed for indoor installation. Detects smoke, temperature rise, and dangerous CO (carbon monoxide) level. The detector also can work without a hub. It is available in two modifications: with sealed batteries (has SB in the name) that run 10 years, and with replaceable ones (has RB in the name) that run up to 7 years. The detector operates as part of the Ajax system, communicating with the hub via the Jeweller secure radio protocol. The hub communication range is up to 1,700m without obstacles.