Used condition; may have wear and age related marks. See pics for condition / what’s included / testing conducted. Siemens QBM2030-1U S55720-S244 Differential Pressure Sensor 0-100Pa Siemens QBM2030-1U differential pressure transmitter for HVAC and building-automation air-pressure measurement. Condition: Used industrial surplus item with possible age/storage/cosmetic wear. Untested unless explicitly stated; see photographs for exact condition and included parts. Please match the manufacturer part number, model and visible connectors/revision to your application before purchase. Includes x1 Siemens QBM2030-1U pressure sensor