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  • SainSmart HC-SR04 Ranging Detector Mod Distance Sensor (Blue)

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    From $4.08 (New)
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Buy from Amazon $999.00$0.01 $750.00 $500.00 $250.00 Aug Dec Apr Aug Dec Apr Aug Dec Apr Aug 2013 2014 2015 $5.20, Apr 14 - Apr 20$5.19, Apr 20 - Apr 21$5.20, Apr 23 - Apr 25$5.19, Apr 30 9:36 am$5.19, Apr 30 9:36 am$5.17, Jul 29 - Jul 31$5.19, Apr 30 9:36 am$5.15, Aug 2 9:23 am$5.19, Apr 30 9:36 am$5.17, Aug 4 - Aug 10$5.19, Apr 30 9:36 am$5.14, Aug 15 - Aug 28$5.19, Apr 30 9:36 am$4.88, Sep 17 11:10 pm$6.20, Nov 19 - Nov 24$4.88, Sep 17 11:10 pm$5.81, Nov 26 - Nov 30$4.88, Sep 17 11:10 pm$6.01, Dec 3 - Dec 8$4.99, Dec 1 5:35 pm$4.99, Dec 12 - Dec 19$4.49, Dec 10 6:21 pm$4.99, Dec 12 - Dec 19$4.76, Dec 22 2:30 am$4.76, Dec 22 2:30 am$4.26, Dec 25 2:39 am$6.01, Jan 1 - Jan 16$4.76, Dec 22 2:30 am$6.01, Jan 1 - Jan 16$5.27, Jan 14 9:40 am$6.01, Jan 1 - Jan 16$4.76, Jan 18 - Jan 19$6.01, Jan 1 - Jan 16$4.99, Jan 22 1:05 am$6.46, Jan 25 - Jan 26$4.99, Jan 22 1:05 am$7.00, Jan 27 - Jan 31$4.99, Jan 22 1:05 am$7.09, Feb 2 - Feb 21$6.99, Feb 1 8:50 am$6.99, Feb 1 8:50 am$5.91, Feb 22 - Feb 24$6.99, Feb 1 8:50 am$6.51, Feb 25 - Mar 6$6.99, Feb 1 8:50 am$6.50, Mar 14 - Mar 15$6.99, Feb 1 8:50 am$6.34, Mar 17 3:59 pm$6.99, Feb 1 8:50 am$6.01, Mar 20 - Mar 22$6.99, Feb 1 8:50 am$6.05, Mar 23 - Mar 24$6.99, Feb 1 8:50 am$6.01, Mar 25 - Apr 4$5.17, Apr 7 12:10 pm$4.99, Apr 5 - Apr 6$5.40, Apr 10 10:54 am$4.99, Apr 5 - Apr 6$5.40, Apr 11 - Apr 13$5.17, Apr 12 - Apr 14$5.50, Apr 15 - Apr 17$5.17, Apr 12 - Apr 14$5.17, Apr 12 - Apr 14$5.17, Apr 18 2:01 am$5.33, Apr 20 - Apr 21$5.17, Apr 12 - Apr 14$5.50, Apr 22 - Apr 25$5.17, Apr 12 - Apr 14$5.48, Apr 26 - Apr 30$5.17, Apr 12 - Apr 14$5.22, May 2 - May 4$2.11, May 3 - May 13$1.00, May 3 - May 5$5.33, May 5 - May 6$2.11, May 3 - May 13$1.11, May 6 8:37 am$5.38, May 6 - May 12$2.11, May 3 - May 13$1.15, May 8 - May 14$5.38, May 6 - May 12$2.61, May 14 - May 18$1.15, May 8 - May 14$5.38, May 6 - May 12$2.61, May 14 - May 18$1.38, May 17 - May 20$5.73, May 20 7:20 am$2.00, May 19 - May 31$1.38, May 17 - May 20$5.81, May 23 - May 24$2.00, May 19 - May 31$1.38, May 17 - May 20$6.30, May 25 - May 27$2.00, May 19 - May 31$1.38, May 17 - May 20$5.81, May 28 - May 31$2.00, May 19 - May 31$1.38, May 17 - May 20$5.38, Jun 2 - Jun 11$2.00, Jun 4 - Jun 8$1.38, May 17 - May 20$5.38, Jun 2 - Jun 11$1.38, May 17 - May 20$0.82, Jun 9 8:34 am$5.17, Jun 12 11:29 am$2.00, Jun 10 - Jun 15$1.38, May 17 - May 20$5.38, Jun 15 - Jun 16$2.00, Jun 10 - Jun 15$1.38, May 17 - May 20$5.38, Jun 18 - Jun 30$1.38, May 17 - May 20$1.00, Jun 17 - Jun 23$5.38, Jun 18 - Jun 30$2.01, Jun 23 - Jun 30$1.38, May 17 - May 20$5.60, Jul 2 1:18 am$2.61, Jul 2 1:18 am$1.38, May 17 - May 20$5.60, Jul 4 - Jul 8$2.99, Jul 3 - Jul 9$1.38, May 17 - May 20$5.11, Jul 9 9:52 am$2.01, Jul 10 6:40 pm$1.38, May 17 - May 20$4.78, Jul 13 5:30 am$2.04, Jul 14 2:50 pm$1.38, May 17 - May 20$4.04, Jul 16 2:41 am$1.95, Jul 16 - Jul 24$1.38, May 17 - May 20$5.59, Jul 25 - Jul 30$2.99, Jul 24 - Aug 10$1.38, May 17 - May 20$5.25, Aug 2 - Sep 1$2.99, Jul 24 - Aug 10$1.38, May 17 - May 20$5.25, Aug 2 - Sep 1$3.75, Aug 11 - Sep 5$1.38, May 17 - May 20$5.27, Sep 3 - Sep 4$3.75, Aug 11 - Sep 5$1.38, May 17 - May 20$5.59, Sep 7 1:53 am$2.99, Sep 6 - Sep 8$1.38, May 17 - May 20$999.00, Sep 10 - Sep 17$5.63, Sep 8 - Sep 10$3.75, Sep 8 - Oct 13$999.00, Sep 10 - Sep 17$5.59, Sep 12 - Sep 22$3.75, Sep 8 - Oct 13$5.59, Sep 24 - Sep 27$3.75, Sep 8 - Oct 13$2.11, Sep 18 - Dec 6$5.27, Sep 30 - Oct 1$3.75, Sep 8 - Oct 13$2.11, Sep 18 - Dec 6$5.59, Oct 2 8:38 am$3.75, Sep 8 - Oct 13$2.11, Sep 18 - Dec 6$5.27, Oct 5 9:21 pm$3.75, Sep 8 - Oct 13$2.11, Sep 18 - Dec 6$6.72, Oct 8 - Oct 9$3.75, Sep 8 - Oct 13$2.11, Sep 18 - Dec 6$5.47, Oct 11 7:18 pm$3.75, Sep 8 - Oct 13$2.11, Sep 18 - Dec 6$8.53, Oct 14 - Oct 22$2.11, Sep 18 - Dec 6$2.00, Oct 13 - Nov 7$6.92, Oct 23 12:46 am$2.11, Sep 18 - Dec 6$2.00, Oct 13 - Nov 7$7.22, Oct 24 7:23 am$2.11, Sep 18 - Dec 6$2.00, Oct 13 - Nov 7$8.42, Oct 31 - Nov 5$2.11, Sep 18 - Dec 6$2.00, Oct 13 - Nov 7$7.00, Nov 7 - Nov 10$3.75, Nov 9 - Dec 6$2.11, Sep 18 - Dec 6$7.19, Nov 12 - Nov 16$3.75, Nov 9 - Dec 6$2.11, Sep 18 - Dec 6$7.03, Nov 17 - Nov 18$3.75, Nov 9 - Dec 6$2.11, Sep 18 - Dec 6$7.19, Nov 19 - Nov 29$3.75, Nov 9 - Dec 6$2.11, Sep 18 - Dec 6$7.14, Nov 30 - Dec 3$3.75, Nov 9 - Dec 6$2.11, Sep 18 - Dec 6$7.03, Dec 3 - Dec 5$3.75, Nov 9 - Dec 6$2.11, Sep 18 - Dec 6$6.65, Dec 8 - Dec 18$2.11, Sep 18 - Dec 6$1.00, Dec 7 - Dec 10$6.65, Dec 8 - Dec 18$2.11, Sep 18 - Dec 6$2.00, Dec 11 - Dec 17$6.65, Dec 8 - Dec 18$2.11, Sep 18 - Dec 6$1.00, Dec 17 - Jan 1$7.03, Dec 20 - Jan 2$3.50, Dec 20 - Jan 2$1.00, Dec 17 - Jan 1$7.03, Dec 20 - Jan 2$3.50, Dec 20 - Jan 2$0.10, Jan 1 - Feb 25$7.03, Jan 15 3:18 am$0.10, Jan 1 - Feb 25$0.01, Jan 15 - Jan 20$6.47, Jan 16 - Jan 19$0.10, Jan 1 - Feb 25$0.01, Jan 15 - Jan 20$6.34, Jan 20 6:11 am$0.10, Jan 1 - Feb 25$0.01, Jan 15 - Jan 20$5.69, Jan 21 - Jan 23$2.11, Jan 21 - Mar 15$0.10, Jan 1 - Feb 25$5.70, Jan 25 - Jan 26$2.11, Jan 21 - Mar 15$0.10, Jan 1 - Feb 25$5.81, Jan 29 10:42 am$2.11, Jan 21 - Mar 15$0.10, Jan 1 - Feb 25$5.69, Jan 31 - Feb 15$2.11, Jan 21 - Mar 15$0.10, Jan 1 - Feb 25$5.42, Feb 18 - Mar 1$2.11, Jan 21 - Mar 15$0.10, Jan 1 - Feb 25$5.42, Feb 18 - Mar 1$2.11, Jan 21 - Mar 15$1.40, Feb 26 - Mar 17$5.30, Mar 2 12:15 am$2.11, Jan 21 - Mar 15$1.40, Feb 26 - Mar 17$5.69, Mar 5 - Mar 12$2.11, Jan 21 - Mar 15$1.40, Feb 26 - Mar 17$5.68, Mar 13 - Mar 16$2.11, Jan 21 - Mar 15$1.40, Feb 26 - Mar 17$5.56, Mar 17 - Mar 19$2.11, Jan 21 - Mar 15$1.30, Mar 18 - Apr 25$5.58, Mar 22 - Mar 24$2.11, Jan 21 - Mar 15$1.30, Mar 18 - Apr 25$6.44, Mar 24 - Apr 7$2.11, Jan 21 - Mar 15$1.30, Mar 18 - Apr 25$5.16, Apr 7 8:43 pm$2.11, Jan 21 - Mar 15$1.30, Mar 18 - Apr 25$6.44, Apr 10 - Apr 23$2.11, Jan 21 - Mar 15$1.30, Mar 18 - Apr 25$5.32, Apr 26 5:15 am$2.11, Jan 21 - Mar 15$1.30, Apr 26 - May 10$5.35, May 1 4:39 pm$2.11, Jan 21 - Mar 15$1.30, Apr 26 - May 10$6.44, May 3 8:55 pm$2.11, Jan 21 - Mar 15$1.30, Apr 26 - May 10$12.00, May 8 - Jul 4$2.11, Jan 21 - Mar 15$1.30, Apr 26 - May 10$12.00, May 8 - Jul 4$2.11, Jan 21 - Mar 15$0.90, May 11 - Jul 7$11.98, Jul 6 - Jul 13$2.11, Jan 21 - Mar 15$0.90, May 11 - Jul 7$11.98, Jul 6 - Jul 13$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$11.67, Jul 14 - Jul 15$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$11.68, Jul 16 - Jul 18$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$11.66, Jul 21 - Jul 27$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$11.63, Jul 28 - Jul 30$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$10.54, Aug 4 - Aug 5$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$5.81, Aug 7 7:18 am$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$10.54, Aug 9 - Aug 10$2.99, Jul 8 - Aug 10$2.11, Jan 21 - Mar 15$8.60, Aug 12 3:01 am$2.11, Jan 21 - Mar 15$0.01, Aug 11 - Aug 19$10.54, Aug 19 3:42 am$2.11, Jan 21 - Mar 15$0.01, Aug 11 - Aug 19$10.56, Aug 22 12:19 am$2.99, Aug 20 - Sep 23$2.11, Jan 21 - Mar 15$10.57, Aug 23 - Aug 26$2.99, Aug 20 - Sep 23$2.11, Jan 21 - Mar 15$10.58, Aug 27 3:18 pm$2.99, Aug 20 - Sep 23$2.11, Jan 21 - Mar 15$10.59, Aug 28 - Sep 5$2.99, Aug 20 - Sep 23$2.11, Jan 21 - Mar 15$10.61, Sep 10 - Sep 11$2.99, Aug 20 - Sep 23$2.11, Jan 21 - Mar 15$10.00, Sep 12 - Oct 9$2.99, Aug 20 - Sep 23$2.11, Jan 21 - Mar 15$10.00, Sep 12 - Oct 9$2.97, Sep 25 - Oct 23$2.11, Jan 21 - Mar 15$9.98, Oct 11 - Oct 22$2.97, Sep 25 - Oct 23$2.11, Jan 21 - Mar 15$9.97, Oct 29 - Oct 31$2.96, Oct 24 - Nov 1$2.11, Jan 21 - Mar 15$9.98, Nov 1 - Nov 2$2.95, Nov 2 10:22 am$2.11, Jan 21 - Mar 15$9.98, Nov 4 1:26 pm$2.94, Nov 3 - Nov 4$2.11, Jan 21 - Mar 15$9.97, Nov 5 - Nov 7$2.26, Nov 5 - Nov 25$2.11, Jan 21 - Mar 15$9.98, Nov 8 - Dec 9$2.26, Nov 5 - Nov 25$2.11, Jan 21 - Mar 15$9.98, Nov 8 - Dec 9$2.92, Nov 26 - Jan 4$2.11, Jan 21 - Mar 15$5.93, Dec 12 - Dec 21$2.92, Nov 26 - Jan 4$2.11, Jan 21 - Mar 15$8.90, Dec 23 3:59 am$2.92, Nov 26 - Jan 4$2.17, Dec 23 - Dec 30$9.98, Dec 24 - Dec 28$2.92, Nov 26 - Jan 4$2.17, Dec 23 - Dec 30$8.14, Dec 30 - Jan 1$2.92, Nov 26 - Jan 4$2.17, Dec 23 - Dec 30$5.65, Jan 2 8:50 am$2.92, Nov 26 - Jan 4$9.98, Jan 5 - Jan 8$0.50, Jan 5 - Jan 28$8.23, Jan 9 - Jan 14$0.50, Jan 5 - Jan 28$7.25, Jan 17 - Jan 27$0.50, Jan 5 - Jan 28$7.25, Jan 17 - Jan 27$1.00, Jan 30 - Feb 29$7.75, Feb 3 - Feb 7$1.00, Jan 30 - Feb 29$7.77, Feb 9 - Feb 11$1.00, Jan 30 - Feb 29$7.25, Feb 13 - Feb 16$1.00, Jan 30 - Feb 29$5.29, Feb 19 5:57 am$1.00, Jan 30 - Feb 29$7.11, Feb 21 - Mar 8$1.00, Jan 30 - Feb 29$7.11, Feb 21 - Mar 8$0.01, Mar 2 - Mar 8$5.58, Mar 11 5:39 pm$0.99, Mar 11 - Apr 13$7.23, Mar 14 11:55 pm$0.99, Mar 11 - Apr 13$6.63, Mar 17 - Mar 21$0.99, Mar 11 - Apr 13$4.54, Apr 7 2:40 pm$0.99, Mar 11 - Apr 13$4.08, Apr 13 11:24 am$0.99, Mar 11 - Apr 13

Price Details

New

Latest $4.08 Apr 13, '16
Highest $12.00 May 8, '15
Lowest $4.00 Jul 12, '14
Average $6.28 (30d avg)
$6.85 (90d avg)
$8.01 (180d avg)
$9.19 (365d avg)
$6.89 (Lifetime average)
Added Apr 13, 2013

3rd Party New

Latest $0.99 Apr 13, '16
Highest $14.95 Jan 17, '14
Lowest $0.01 Mar 2, '16
Average $0.99 (30d avg)
$0.81 (90d avg)
$1.67 (180d avg)
$1.81 (365d avg)
$2.92 (Lifetime average)
Added Apr 13, 2013

3rd Party Used

Last Seen $2.17 Dec 30, '15
Highest $999.00 Sep 10, '14
Lowest $0.01 Jan 15, '15
Average $2.17 (180d avg)
$2.17 (365d avg)
$15.15 (Lifetime average)
Added Apr 13, 2013

Product Description

There are 4 pins out of the module: VCC , Trig, Echo, GND . So it's a very easy interface for controller to use it ranging. The all process is : pull the Trig pin to high level for more than 10us impulse , the module start ranging ; finish ranging , If you find an object in front , Echo pin will be high level , and based on the different distance, it will take the different duration of high level. So we can calculated the distance easily :Distance = ((Duration of high level)*(Sonic :340m/s))/2

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