A latch includes a base, a drive shaft and cam, and a handle attached pivotally to the drive shaft. Specifically, provided is an aromatic polycarbonate resin composition containing 100 parts by mass of an aromatic polycarbonate resin and 0. To provide a possibility of further improving the safety of persons in the area of entrance barriers beyond the mere passive safety of the entrance barrier, the invention proposes for the sensor unit to include a capacitive sensor. Preferably, the bushing has a first cavity 1. Serum potassium concentrations of the patient can then be predicted at any time during any hemodialysis treatment session with the estimated potassium mobilization clearance and pre-dialysis distribution volume of potassium of the patient. The bottom side of the sealing resin of the inner connecting portion is covered with an inner connecting portion sealing resin.