Black aluminum alloy shell, mechanical style, good texture, not low-grade printed products, Digital display mechanical dial, accurate measurement, real-time feedback, circular design, data display is clear at a glance Tight packaging, embedded hygrometer + embedded pneumatic connector, tight installation, good sealing Can be installed on tube, different from other hygrometers, can be installed on tube, and humidity detection in this space is more accurate<br><br>Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:Black Material:aluminum alloy<br><br>Package Contents: 1 * Filament Humidity Detection Module<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.