The 11SM1B08 is a smoke detector and sounder module manufactured by Lovato, an Italian electronics and electrical engineering company. The module is designed to work as a detector and sounder for fire, gas and smoke alarms. It is equipped with a photo-electric chamber that can detect smoke particles. The module is certified for use within Zone 2, 21 & 22 of hazardous areas. It also features a self-diagnosis system and is compliant with EN 54-7, EN 54-5 and EN 60950-1 standards. The module is typically installed in conjunction with an electronic control panel and can be connected to an alarm signal, a signal of deactivation, a common alarm and an auxiliary input. The 11SM1B08 module can detect Smoke, Fire, Gas and Carbon Monoxide levels.