- Material: Zinc<br />- Ultrasonic display module use small microcomputer system controller、 use STC10F04、 fully compatible with 51 microcontroller.<br />- IO port output pins、 two switch output terminal、 three key features、 three digital display.<br />- With DS18B20 temperature compensation circuit contact interface<br />- Ultrasonic ranging module can be used directly measured the distance、 you can set the distance alarm.<br />- The system can provide ranging program can display panel of the schematic diagram.<br />- Wide-voltage: DC 5~12V<br /><br />                                                                                                                                Dimensions: 1.77 in x 2.36 in x 1.18 in (4.5 cm x 6.0 cm x 3.0 cm)<br />Weight: 0.81 oz (23 g)<br /><br />