In one preferred embodiment, the present invention includes a valve having a glue diverter to divert or prevent glue from blocking a solenoid discharge passage and thereby ensure operation of the valve. A means is provided so that the reaction solution and reagent suctioned will move towards the channel through which the liquids are suctioned. One embodiment of the invention substantially reduces the degradation of the antenna performance in wideband modes of operation compared with prior art overmolding schemes. The permanent-magnetic alloy film and the alloy sheet are thus combined for cooperatively achieving the anti-theft function.