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The SRF04 was designed to be just as easy to use as the Polaroid sonar, requiring a short trigger pulse and providing an echo pulse. Your controller only has to time the length of this pulse to find the range.
Frequency - 40KHz.
Size - 43mm x 20mm x 17mm height.
The input Trigger is a 10uS Min. TTL level pulse
Echo Pulse is Positive TTL level signal, with the width proportional to the object range.
Range - 3cm to 3m
Original Ultrasonic Ranger - SRF04
- Brand: Devantech
- Product Code: DEVAN-SRF04
- Reward Points: 15
- Availability: 8
- Ex Tax: £14.61
- Price in reward points: 200