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Long Range RF link Kits with Encoder and Decoder 2 km 1.75mm Dark Green PLA Filament 1Kg The integrated optical heart rate The integrated optical heart rate sensor provides accuracy within plus or minus 5 beats per minute under optimal conditions when the device is worn snugly against the wrist with direct skin contact Short circuit protection (SCP) making it ideal for both prototype development and production grade implementations greenhouse ventilation systems
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