RADIO WAVE-TYPE BURGLAR PREVENTION DETECTOR

摘要

PURPOSE:To prevent the reduction of burglar prevention detection and also to prevent destruction due to static electricity. CONSTITUTION:This radio wave-type burglar prevention detector is a detector 1 where a sound wave transceiver 20 where antennas 22c are fixed at an opening recessed place 22b on a conductive outline is provided inside a case 10 so as to transmit radio wave from the transducer, to receive the reflection wave of radio wave by the sound wave transceiver and to detect the presence or absence of an intruder. An insulated and a protective cover 30 covering the opening recessed place of the sound wave transceiver is provided.