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...a couple of infrared diodes. The principle of detecting is granule in the can reflect infrared . Infrared diodes are placed in the speci...

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ODM OEM CO For Carbon Monoxide Gas Leakage Standalone Battery Operated 85dB Co Voice Alarm CO and Introdu...

... will alert and warn people stay far away from danger field when it detected . This product named Photoelectric (hereinafter called d...

...l alert and warn people stay far away from danger field when it detected . This product named Photoelectric (hereinafter called detec...

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....The is designed to give early warning of developing fires by giving off the alarm sounds from its built-in alarm horn. It can provi...