uxcell 40pcs 3mm 940nm Infrared Emitter Diode DC 1.2V LED IR Emitter Light Emitting Diodes Clear Round Head sold2024 SecurityIntegrated metal insert provides this

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There are more ways to use it together to meet the needs of functional diversification

The stability of the laser output is greatly improved since there is no additional crystal

It can be used experiments

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uxcell 40pcs 3mm 940nm Infrared Emitter Diode DC 1.2V LED IR Emitter Light Emitting Diodes Clear Round Head sold2024 SecurityIntegrated metal insert provides thisuxcell 40pcs 3mm 940nm Infrared Emitter Diode DC 1. 2V LED IR Emitter Light Emitting Diodes Clear Round Head Description: Low heat, energy saving, low power consumption, long service life. NOTE: IR Emitter ONLY, IR Reciever is NOT included. Specification: Wavelength: 940nmVoltage: DC 1. 2 1. 3VEmission Distance: 7 Meters 23FtHead Size: 3. 8 x 5. 3mm 0. 15 x 0. 21 inch ( Max. DH)Total Length: 34mm 1. 34 inchPolarity: Anode (Longer Part) Cathode