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Smart Ultrasonic Heat Meter IP68 Residential Central Heating Cooling Energy Meter. Transducer (signal transmitter unit) The main signal-generating component of the ultrasonic heat meter uses imported piezoelectric ceramic elements, ensuring high stability and excellent consistency. Temperature sensors Adopts high-precision platinum resistance sensors (PT1000), combined with a precise measurement circuit, ensuring accurate temperature detection. Self-diagnostic function During normal operation, if abnormalities occur such as communication failure, low power supply, or tampering attempts, the system will display corresponding error codes and.