M03 m04 water level detection module sensor green non -contact liquid level touch switch switch liquid sensor

Product Description

The difference between MO3 and M04 is that the power supply voltage voltage is different

M03 33-5V

M04 3.3-26V (It is recommended not to use more than 24V) The induction distance is generally 3mm-4.5mm universal (not available in metal material) product size 10mm*30mm interface description

GND: Power-Power OV

VCC: Power+ Power 3.3-5V

Out: output non -induction output high level with induction output low level

Precautions

3.3V-5V of the board is as small as possible due to the size of the board. The board is not protected without reverse connection. Remember not to reverse the power supply, it is easy to burn the chip.

Often ask questions

Question 1: If the M04 input is 12V, how do I connect to the pull -up resistance?

Answer: It depends on what device you receive.If you just connect to the single -chip port, pull it to 5V or 3.3V.The voltage can be pulled up according to the connected device,

Question 2: Can I pick up the single machine, can Arduino be okay?

Answer: Yes, if the output is out, you can connect some PLC or directly drive the device. The M03 can directly connect the ADNUO single -chip microcomputer M04.

Question 3: What is the principle of working?

Answer: Through the inductance, the low level of liquid output is realized, no liquid output high level

Question 4: Can I control relay?

Answer: Yes

Question 5: How to use?

Answer: close to the container wall, the module is induced to the liquid light light OUT port output low -electric flat lights, OUT output high levels when there is no liquid, and the light is not bright.

Question 6: Do you have to be transparent, can metal be used?

Answer: It doesn't matter if you are transparent. The principle is inductive. Metals cannot