The body of a pressure sensing component includes a pressure sensor, a first opening, and a first pair of electrical contacts. A cap of the pressure sensing component comprises a second opening, a wiper seal, and a second pair of electrical contacts. The cap is rotatable relative to the body. When the cap is in a first rotational position, the first and second openings are in fluid communication with each other and the first pair of contacts are not coupled with the second pair of contacts. When the cap is in a second rotational position, the seal isolates the first opening from the second opening and the first pair of contacts are coupled with the second pair of contacts. The pressure sensing component may be coupled with a syringe and needle to externally adjust and monitor the pressure of fluid in an implanted gastric band system.
