HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO MEGA2560 Nano Robot XBee ZigBee, Set of 5

A great deal on good quality sensors. My needs don't require extreme accuracy and these have shown themselves to be good enough and an amazing price.Be aware that these are the 4 pin model that include a trigger pin. Exactly what I was looking for.

Google around to see if these parts are sensitive enough for your application. These affordable sensors are not industrial grade. But they are still interesting for most "maker grade" applications. Fun to play with, at a great price. I received 5 of these distance sensors promptly. All 5 tested and worked according to spec. Very satisfied.

Good quality, no broken units (although I've only tested 4 of the 5).They shipped quickly and were packed well. The boards look nicely constructed, with good solder joints all around. No bent pins.

Very good modules, using with a Cleanflight-compatible flight controller on a quadcopter. Makes it much easier to learn to fly as it can keep you from hitting ground.

YES YES YES!!! Awesome deal for awesome hardware!!! Great quality, if you need ultrasonic sensors, these are them!!!

These are the good ones. Other sensors may go into error mode when objects are too close or far away. These do not.

Excellent price for nice quality electronics.Operate as advertised and a super deal.

Product arrived as promised in good order and worked fine..