| 摘要 |
A security status indication system for a closure, wherein the closure has a locking member which is selectively actuatable into and from a locking condition, and the system comprises a sensor arranged to detect a change in condition of the locking member and a transmitter which, upon detection of said change in condition of the locking member, transmits a signal to a portable device. The portable device comprises user input means and a display screen, wherein the device is arranged to store a security status condition for said closure according to the most recently received signal from the transmitter such that upon operation of the user input means by a user, the device indicates the security status of the closure on said display screen according to the most recently stored security status indication.
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