HRLV - Maxsonar - EZ (MB1013)/No Sensor Dead Zone/Calibrated Beam Patterns/Stable Range Readings/ Low Power Demands/And A Host Of Other Features Operates from 2.5V-5.5V/42kHz Ultrasonic sensor measures distance to objects/RoHS compliant Read from all sensor outputs: Analog Voltage, RS232 or TTL Serial, and Pulse Width/Virtually no sensor dead zone, objects closer than 30 cm will typically range as 30 cm Resolution of 1 mm/Maximum range of 5000 mm (195 inches)/Tolerates outside noise sources/10Hz reading rate/Small, light weight module Designed for easy integration into your project or product/Operational Temperature from -15 to +65 (+5 to +149)/Real-time automatic calibration (voltage, humidity, ambient noise) Internal temperature compensation/Option external temperature compensation HR-MaxTemp/Firmware filtering for better noise tolerance and clutter rejection/Great starting point for users unsure of which sensor to use