The SMT-4203D-T/R surface mount transducer measures 7.5 × 7.5 mm with a height of 2 mm. It produces 85 dB at 2700 Hz at 10 cm based on 3.6 V square wave. Coil resistance is 12 Ohms and 120 mA is the maximum current. The device is compatible with convection, IR, and vapor phase. This side firing transducer is ideal for handheld and battery operated devices.