1、Point-type photoelectric smoke fire detector GY601W Description: L+, L-: Signal bus is non-polar. 2、Point-type temperature fire detector GW601W Description: L+, L-: Signal bus is non-polar. 3、Manual fire alarm button GM603W Description: L+, L-: Signal bus is non-polar; D1, D2: Connected to the fire alarm telephone line (fire telephone socket HY5714B E1, E2). 4、Fire hydrant alarm … Read more
Whether in the application of fire protection systems or during related examinations, it is easy to confuse the activation and deactivation times and control requirements of related equipment. This article categorizes the information by system for easy reference and application. 01 Fire Automatic Alarm System Time – 3s ① The fire linkage controller should issue … Read more
On September 5, news from market research firm TechInsights indicated that consumer spending on smart home systems and services will continue to grow robustly. The firm predicts that global consumer spending on smart homes will reach $131 billion in 2023, a 10% increase from 2022. In the next five years, spending in the smart home … Read more
Bus System refers to all device nodes, such as zone modules and alarm devices, being connected to two communication lines. Regardless of how many devices there are, they can share these communication lines. Branch System means that all connected devices must use independent communication lines to connect to the host. For example: When an alarm … Read more
A certain shopping mall has set up a fire automatic alarm system, where the 2# loop bus of the fire alarm controller is shared by two fire compartments on the first floor. Fire compartment one has 30 smoke fire detectors, 10 manual fire alarm buttons, and 10 bus modules (2 inputs and 2 outputs); fire … Read more
1. Principle of Short Circuit Isolators The short circuit isolator is a device used in the transmission bus of fire alarm systems that isolates the branch line during a short circuit. It automatically makes the two ends of the short circuit section high resistance or open circuit, preventing damage to the controller and not affecting … Read more
Bus short-circuit isolators are mainly used to isolate components on the bus, isolating fire detectors, combustible gas detectors, manual alarm buttons, sound and light alarms, etc., in certain areas or segments, to avoid affecting the reliable operation of the unisolated area system. This is crucial for maximizing the overall functionality of the system without being … Read more