... ISO9001/14001/CE/ROHS 5. LERDN Electrical Fire Monitoring System can omnidirectionally monitor various abnormity or fault, such as ... current, overcurrent, overvoltage, overhigh temperature, etc. This system can sound alarm or cut off power supply in time ... to ensure safe operation of electric system and early warning of fire. LDF-225/A ... is LDF-225/A-100A. Electrical Fire Monitoring System