Power supply and lightning protection grounding design GB 10408.1-2000 \"General Technical Specifications for Intrusion Detectors\" 6.1.4 The nominal power supply voltage is DC 12 V, unless otherwise specified by the supplier. The detector shall meet the technical requirements of this standard when the power supply voltage is at least within the range of +25% to -15% of the nominal voltage. If the power supply voltage is lower than the specified value of this standard, an alarm state or a fault state shall be generated. GB 10408.9-2001 \"Passive Glass Break Detector for Indoor Use\" 5.1.3 When the power supply voltage changes within the range of ±25% of the nominal value, the detector shall be able to meet the requirements of this standard. GB 12663-2001 \"General Technical Specifications for Burglar Alarm Controllers\" 5.3 Power supply requirements 5.3.1 Powering the detector When the burglar alarm controller supplies power to the interconnected intrusion detectors or auxiliary equipment, it shall be able to provide a DC 12 V-15 V operating voltage, and the voltage ripple factor shall be less than 1% under full load conditions. The rated value of the supply current should be specified in the product standard.
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