Pressure gauge with self-generating power capability for a tire pressure indicator

摘要: A pressure gauge is used with a receiver device of tire indicator for indicating the condition in pneumatic tire, and includes casing formed an aperture adapted to be mounted on such that enters into via aperture, signal generating disposed capable transmitting wirelessly received by when not within predetermined normal operating range. power supplying supplies electric device, self-generating voltage unit which has piezoelectric impact continuously striking against motion so as enable generate output, rechargeable cell unit, rectifying-and-charging interconnects permit charging output from unit.