FainWan Mini Indicator Vertical Water Level Sensor Stainless Steel 45mm Float Switch

Key features

• This is a Mini stainless steel float switch,contains no mercury.
• This float switch is a device used to sense the level of liquid within a tank,the switch may activate a pump,an indicator,an alarm,or other device.
• This Mini float switch is a simple structure,easy installation liquid level controller.It does not have a complex circuit,will not be disturbed,as long as the material selection,liquid,pressure or temperature can be used in any environment.
• Light weight and simple working principle,high reliability.
• The versatility of this vertically monted sensor means that it can be installed either at the top or base of your tank,depending on whether you wish to detect the water`s rise or fall.

HC-12 wireless serial port communication module is a new-generation multichannel embedded wireless data transmission module. Its wireless working frequency band is 433.4-473.0MHz, multiple channels can be set, with the stepping of 400 KHz, and there are totally 100 channels. The maximum transmitting power of module is 100mW (20dBm), the receiving sensitivity is -117dBm at baud rate of 5,000bps in the air, and the communication distance is 1,000m in open space. The module is encapsulated with stamp hole, can adopt patch welding, and its dimension is 27.8mm×14.4mm×4mm (including antenna cap, excluding spring antenna), so it is very convenient for customers to go into application system. There is a PCB antenna pedestal ANT1 on the module, and user can use external antenna of 433M frequency band through coaxial cable; There is also an antenna solder eye ANT2 in the module, and it is convenient for user to weld spring antenna. User could select one of these antennas according to use requirements. There is MCU inside the module, and user don't need to program the module separately, and all transparent transmission mode is only responsible for receiving and sending serial port data,

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