The MaxBotix low voltage MB1040 LV-MaxSonar-EZ4 offers very short to long-range detection and ranging, in an incredibly small package with ultra low power consumption. The MaxSonar-EZ4 detects objects from 0" to 254".
Indoor GPS Starter Kit featuring one Modem and five Beacons to get your project running. Accurately position your robot to a couple centimeters indoors! Kit includes one modem, 4 standard beacons and 1 beacon with built in IMU.