Technical Parameters: 1. Dimensions: 10cm * 8cm * 8cm (L * W * H) 2. Power Supply: AC 110V ~220V 3. Wireless Operating Frequency: 433MHz 4. Working Environment: Stability: 0-55℃; Relative Humidity: 40% -70% 5. Alarm sound: up to 110 dB What's in the Package: 1* Host Speaker 2* Wireless PIR Motion Detector 2* Wireless Remote Key Fobs 1* English Instruction Manual .
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