The MaxBotix low voltage MB1030 LV-MaxSonar-EZ3 offers very short to long-range detection and ranging, in an incredibly small package with ultra low power consumption. The MaxSonar-EZ3 detects objects from 0" to 254".
The MGS1600GY is a sensor capable of detecting and reporting the position of a magnetic field (typically magnetic tape on the floor) along its horizontal axis. Includes a built in Gyro. Replaces MGS1600 TS-072-000