| 摘要 |
PROBLEM TO BE SOLVED: To set an arbitrary code number by splitting an anti-theft device into a keyboard part and a circuit unit part, providing a key switch for inputting the code number to the keyboard part, an alarm device, and a code number deletion part, and providing a code number judging part on the circuit unit part. SOLUTION: An anti-theft device 1 is split into a keyboard part 2 and a circuit unit part 3, which are connected by a concentrated cord comprising eight cores of wires (1)-(8). A plurality of keys 9 of the numerals of 0-9 and symbols of x and # for inputting a code number are arranged on an upper surface of a case 2a, and a red display lamp 24, a green display lamp 25, and a grill for a buzzer 5 which is an alarm device are provided below the keys 9. A change-over switch 6 and a hole 8b for inserting a code number deletion part are provided on a side of the case 2a. A battery exclusive for the anti-theft device, the buzzer 5, and a code number receiving part 9 by the keys are provided in the case 2a. A CPU which is a code number judging part is provided in a case 3a. |
