BW Technologies offers its new three-year maintenance-free GasAlertClip Extreme 3 gas detector for H2S and CO. Economically priced at $240 USD, the detector features a built-in concussion-proof boot; water-resistant housing; three alarm levels with vibrating, audible and visual alarms; optional datalogging; and an easy-to-use single-button interface. BW Technologies, Calgary, Canada.