Accurate error: ±2mm (In the water); Repeatability: ±1mm (In the water) Switch forms:O .C(Open and close frequently) size:8.8 x 1.54cm Material: PP plastic colour:Black Package Contents: 24 x Horizontal float switch 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.