Patent ID: 6963276

Claim:
A card-type anti-miss and anti-theft alarm device comprising: a) a portable main frame having: i) a main frame central processing unit; ii) a main frame power supply unit connected to the main frame central processing unit and providing a main frame power supply; iii) an intermittent oscillating transmission unit connected to the main frame central processing unit and transmitting a high frequency radio signal; and iv) an main frame optical reminding circuit connected to the main frame central processing unit and having a light emitting element emitting an optical warning when the main frame power supply from the main frame power supply unit is below a predetermined level; and b) an portable alarm sub-frame having: i) a sub-frame central processing unit; ii) a sub-frame power supply unit connected to the sub-frame central processing unit and providing a sub-frame power supply; iii) a signal receiving unit connected to the sub-frame central processing unit and receiving the high frequency radio signal from the intermittent oscillating transmission unit and transmitting the high frequency radio signal to the sub-frame central processing unit; and iv) a sonic and optical reminding circuit connected to the sub-frame central processing unit and having light emitting elements, the sonic and optical reminding circuit emitting an optical warning when the sub-frame power supply from the sub-frame power supply unit is below a predetermined level and emitting an optical and an audible warning when the high frequency radio signal is below a predetermined level, wherein both of the portable alarm sub-frame and the portable main frame have a thin card design.