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Use only lead acid batteries OPEN
The other junction
of sensing distance at 23℃ within temperature range of -25℃ to 60℃
You can use it used for fixing pulley on motor shaft
You can order any number of meters up to 100m
Analog Water pH Sensor V2 (DFRobot Gravity) r503 Use only lead acid batteriesGravity: Analog pH Sensor Meter Pro Kit V2 For Arduino is a professional Arduino pH Sensor Meter Kit with an industrial electrode. This ph. sensor module is an upgrade for V1 with improvement is calibration method, more friendly use and better accuracy Attention The bottle cap of the probe contains protective liquid (3. 3mol L KCL). Even if the bottle cap is screwed tightly, some protective liquid may still leak around the bottle cap, forming white
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