| 摘要 |
PURPOSE:To improve the housing system of keys in such a way as not to forget housing keys into the main housing box when the main housing box to house the keys for rooms is set for protecting persons from being shut out from their rooms. CONSTITUTION:Housing boxes 22-25 to house keys ate provided for rooms 2-5. In cases where the keys are not housed into the main housing box 9 within a given time period after taking the keys out from the housing boxes 22-25 and under the condition the personal ID cards are read by a go-out cards reader 19 for unlocking the door 8 of a building 1, a warning signal is output to prevent the unlocking of the porch door. |
