Alarm siren printed circuit board

Fire alarm circuit board features ◆ The built-in eight-bit single-chip computer with A/D conversion has powerful analysis and judgment capabilities. Through the solidified operation program inside the detector, it can automatically complete the compensation for changes in external environmental parameters and the judgment of fire alarms and faults. The characteristic curve of the change of environmental parameters is stored, which greatly improves the real-time and accuracy of the whole system in detecting fire. ◆ Using electronic coding method, on-site coding is simple and convenient ◆ The indicator light flashes to prompt its normal working status, and its running status can be observed on site ◆ The bottom is sealed, which can effectively waterproof, dustproof, and prevent the damage to the detector caused by the harsh application environment. The fire alarm circuit board also has functions such as electrical fire monitoring and alarm, linkage control, fault detection, shielding, and network communication. China fire alarm circuit board factory Fire alarm circuit board product parameters -Working current: The quiescent current is less than 10UA, and the working current is less than 30MA -Operating temperature: 40℉-120℉(4℃-50℃) -Gas interface temperature: 10%-90%. -Buzzer sound level: 85 dB at 10 feet -Battery Life: At least 1 year -Working voltage: 9VDC/12VDC -Alarm working current: 10 - 30ma -Smoke Sensitivity: Compliant with ul217 standard 3.2% per foot of test value Weak smoke detectors are responsive Working environment: -10℃~50℃ -Alarm volume: 85 dB at 10 feet (customizable)