fire alarm control system can be divided into regional... https://www.vedardsecurity.com/fire-alarm-system-types-ezp-25 According to the requirements of the code, the fire alarm control system can be divided into regional alarm system, centralized alarm system and control center alarm system. vedardalarm | | 0 | 147 | 0
Two forms of tree bus and ring bus in bus system https://www.vedardsecurity.com/addressable-fire-alarm-bus-ezp-24 The loop of the ring bus is closed loop. With the help of the bus isolator, a fault at one point in the line will not affect the operation of the rest of the system. A bus short - circuit isolator... vedardalarm | | 0 | 316 | 0
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