No.	PRODUCT	MANUFACTURER	PRICE	RATINGS	POPULARITY	LINK
1.	SODIAL(R) DYP-ME007Y Ultrasonic Sensor Module	SODIAL	£7.98		4.7	VIEW PRODUCT
2.	URM37 V4.0 Ultrasonic Sensor/URM37 V4.0 Ultrasonic Sensor Comes With A Temperature Correction Which Is A Very Unique Feature At This Level.	DF	£18.86		4.7	VIEW PRODUCT
3.	Ultrasonic Range Finder XL-MaxSonar-EZ4	Maxbotix	£43.63		4.5	VIEW PRODUCT