Ogam Tech GSMS61 Plugin Ultrasonic Receivers & Transmitters ROHS

The GSMS61 ultrasonic transmitter and receiver pair operates across a wide DC voltage range of 5 to 12 volts. This makes it directly compatible with common 5V microcontroller platforms like Arduino, as well as standard 12V industrial power supplies, providing significant flexibility in system design without requiring additional voltage regulation.

To measure distance, you need a driver circuit for the transmitter and a receiver amplifier for the echo signal. The transmitter is driven by a 40kHz pulse train generated by a microcontroller pin, often via a driver IC like a MAX232 or a simple transistor. The receiver's output is a weak AC signal that must be amplified and filtered before being fed into a comparator or ADC on the microcontroller to measure the time-of-flight.

The detection range is highly dependent on your driving circuit, receiver gain, and the acoustic environment. With proper driver and amplifier design, 40kHz transducers like the GSMS61 can typically detect objects from a few centimeters up to several meters. Maximum range is influenced by transducer sensitivity, output power, and target material (soft materials absorb sound more than hard, reflective surfaces).