Smoke Detector for Commercial Buildings

This smoke detection system for fire alarms in buildings is compliant with the UL 268 standard, 8th Edition. There are two types of fire alarms: P-type and R-type. The P-type requires low power consumption, allowing the connection of more than 100 detectors to a single line. This system combines an MCU (RL78/G22) and a photoelectric smoke detector AFE to create a fire alarm with ultra-low power consumption and a simple configuration. Optionally, high-performance R-type and intelligent-type fire alarms that utilize power line communication (PLC) are available.

System Benefits:

• Achieves ultra-low power consumption by applying SNOOZE mode sequencer (SMS) operation on the MCU.
• Simplifies the configuration of MCU and photoelectric smoke detector AFE IC, minimizing the need for external parts and reducing PCB size.
• Reduces power consumption and allows for an increased number of sensors, resulting in fewer sub-systems in a building. This helps to reduce deployment costs.