KEY STORING CASE, AND ABSENCE SETTING DEVICE USING THE CASE

摘要

PROBLEM TO BE SOLVED: To provide a key storing case provided with a key use detecting means which can be realized at low cost without providing any modification to a lock but keeping it as it is, and an absence setting device utilizing the case. SOLUTION: This device comprises an inner case 4 for covering a key 3, and an outer case 1 in which the inner case 4 is movably installed, and it is provided with a key use detecting means to detect use of the key 3.