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[@nathanpc]

Awesome bit of vintage technology. Thanks very much for sharing!

[@douro20]

A very nice design you don't see often anymore, using an electrostatic transducer rather than a piezoelectric transducer.

[@cyberlightbeing]

Brilliant! Thank you for this. Is there a chance that you could possibly scan the manual to include the circuit diagram and make it available?

[@zaprodk]

Thank you for sharing! - Any chance you could put the images from the manual up in a PDF somewhere ? I'd like to read the schematics with component values visible. Thanks!

[@paulmeynell8866]

That looks like the senscomp 600 series environmental ultrasonic sensor, I am trying to,work,out how to play bat calls through it !

[@2150dalek]

very coOL....yes, some data out there but education websites tend to want to charge for pdf files......$33, ridiculous.

[@rubenquintanilla6812]

hey guys i have a question... what is the difference between polaroid ultrasonic sensor and HC-SR04

[@sirpatrickrattschlegel2828]

HC-SR04 has a transmitter and separate receiver ultra-sonic speaker, microphone. And the Polaroid let's say a Transceiver (spekrophone :-) )

[@sirpatrickrattschlegel2828]

Check out the exact same Sensor is still used in new products :> www.instrumentwarehouse.com/shop/Tape.html