| 摘要 |
An improved thermal sensing alarm structure comprises a closed chassis having an upper casing with a Fresnel lens and a lower casing; a circuit board between the upper and lower casings; a plurality of wedges protruded from both inner lateral sides of the upper casing such that the upper and lower casing being latched by the latching grooves and wedges; a DC power socket, a long pin terminal, and battery power supply wire being soldered on the circuit board; at least one embedding groove with appropriate width and a set of terminal slot being disposed at an end of the lower casing, such that the circuit board can be inserted into the embedding groove and terminal slot and fixed by the DC power socket and long pin terminal.
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