GSM alarm box for Water tank and oil level monitor

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$50.00 - $100.00 / Set | 1 Set/Sets (Min. Order)
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Place of Origin:
Shanghai, China
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1000 Set/Sets per Month
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Paper carton
Shanghai Port
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WF-902 GSM alarm Unit for Water level or oil level monitor and alarm System

WF-902 is used to do the water level monitor and alarm for the water tank or oil tank


  • Compatible with worldwide GSM mobile SMS Protocal;
  • Can config to use the SMS or phone calling alarm information notice to the management person
  • Accepts normally Open, Normally Closed or Changeover Float switches
  • Four water leavel detection and GSM alarm sms report
  • Auto-resend the alarm message or phone calling with a pre-set timer to avoid the mistake of the management person
  • Alarm infomation text for different level can be pre-set by the user
  • Optional Remote Monitor/Control unit to instantly view state of Tank and Pump and manual override of pump.
  • Water proof installation box design and easy input unit can monitor water flow and stop pump to prevent it running dry in event of low water level at supply.

The gsm alarm system has been designed for low power consumption (making it suitable to be powered by a small solar panel at remote locations). Both the wireless Pump Unit and the remote Wireless Tank unit have Four switch type water level alarm switch inputs,one alarm sensor input and two relay outputs available.

If you have any interest in our GSM management Unit,please contact us with our online skype service: wafer-service

System Map:


  1. When Water Level is at Very low, Low, High and Highest ( four water level )then will send the gsm Alarm message to Management Person or phone calling the management person. (you can preset to enable every position alarm function)
  2. When Water level is lower than Lowest position, then will start the Relay1 ( Can be used to drive the water pump);
  3. When Water level is higher than Highest position, then will start the Relay2 ( Can be used for the alarm speeker or alarm lamp);
  4. When System alarm happens,that will Send the SMS Alarm message to the Management Person;
  5. When water level back to the normal postion,it will also send the alarm message.
  6. System can be installed easily and automatic system adjust.
  7. Every position alarm function can be enabled or disabled.

Mobile phone software for android system:


Optional water float switch ( water tank side mounting)