Provisions facilitating manual calibration, e.g. input or output provisions for testing; Holding of intermittent values to permit measurement

Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation > Prevention or correction of operating errors > Calibration, including self-calibrating arrangements > Provisions facilitating manual calibration, e.g. input or output provisions for testing; Holding of intermittent values to permit measurement

Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation > Prevention or correction of operating errors (G08B29/02, G08B29/12 take precedence) > Calibration, including self-calibrating arrangements > Provisions facilitating manual calibration, e.g. input or output provisions for testing; Holding of intermittent values to permit measurement