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Heiman WS-720ES
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Carbon Monoxide sensor with WiFi;
Red alarm LED indicator, sound level 85 dB / 3 m;
Power  DC 2*1.5V Alkaline AA LR6
Operating temperature -10°C ~ +40°C;
Operating humidity <=95% RH without condensation;
Wall mounting or ceiling mounting;
Conform to EN 50291-1:2018
Sensor lifespan 10 years;
Battery life 5 years