Murata (MA40S4R) Ultrasonic Sensor, Receiver, MA40 Series, 9.9 mm

Ultrasonic Sensor, Receiver, MA40 Series, 9.9 mm Diameter, 40 kHz, -63 dB, -40°C to 85 °CProduct OverviewMA40S4R is an ultrasonic receiver sensor. MA40S4R consist of piezoelectricceramics, metal plate, resonator and resin case. Resonator has like a funnelshape to transmit ultrasonic waves which is generated by vibration of resonatorto the air efficiently(or to concentrate ultrasonic waves from the air on thecentre of resonance). Sound pressure level(S.P.L.) is the most importantcharacteristic for ultrasonic transducers. For example, in measuring distanceapplication, high S.P.L. transducer enables to detect the further distance.High S.P.L. and high sensitivityCompact size(10.0mm dia.)Open type structure (used for indoor applications)Product InformationSensing Range Min: 200mmSensing Range Max: 4mBeam Angle: 80°Switching Frequency: 40kHzExternal Diameter: 9.9mmSensitivity (dB): -63dBOperating Temperature Min: -40°COperating Temperature Max: 85°CProduct Range: MA40 Series