Murata MA40S4S Ultrasonic Sensor Transmitter 0.2-4 m Range 40kHz

Murata MA40S4S Ultrasonic Sensor Transmitter is a 40 kHz ultrasonic transmitter with a sensing range of 0.2 to 4 metres, designed for precision detection applications.

The MA40S4S is constructed from piezoelectric ceramics, a metal plate, a resonator and a protective resin case. Its funnel-shaped resonator concentrates the ultrasonic waves and projects them into the air, supporting efficient and sensitive operation. A sound pressure level (S.P.L.) of 120 dB typ. supports distance measurement, enabling the detection of objects at greater ranges.

Key Features

• 40 kHz centre frequency
• Sensing range of 0.2 metres (min) to 4 metres (max)
• 80° beam angle
• Compact diameter of 10.0 mm
• Sound pressure level of 120 dB typ.
• Operating temperature range of -40 °C to +85 °C
• Dimensions: width 3.3, depth 1.5, height 4.3
• Weight: 0.5 gm

Applications

The transmitter is intended for object detection, precise distance measurement and dynamic body detection systems within industrial and commercial settings. Its compact size allows integration into space-constrained designs.

Important Usage Note

Due to its open-type construction, this sensor is not recommended for outdoor applications where it could be exposed to moisture, dust or other environmental contaminants. It is designed for controlled indoor or protected environments where its performance can be fully utilised.