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Remove dust
It has good shockproof
Westone in ear monitors
CCTV wireless security surveillance camera
no longer have to worry about the fingers in the middle
ACEIRMC HC-SR04 Ultrasonic Sensor Distance Module for Nano Robot XBee ZigBee by ElecRight(10pcs) 10pcs industrial Remove dustACEIRMC HC SR04 Ultrasonic Sensor Distance Module for Nano Robot XBee ZigBee by ElecRight(10pcs) DescriptionHC SR04 Ultrasonic SensorPower Supply : 5V DCQuiescent Current : <2mAEffectual Angle: <15Ranging Distance : 2cm 500 cmResolution : 0. 3 cmMode of Connection: VCC trig(T) Echo(R) GND(VCC supply 5V, and GND is ground wire. TRIG is trigger control signal input, ECHO is echo signal output.)AttentionThe module should be inserted in the circuit before
