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Despite its many short-comings, our 2nd gen Water/Soil-Moisture sensor has been a solid seller for many years. Yesterday we have sold the very last one of it. We realize that water leak detection is an important application for many of our customers. 

We are pleased to announce that Quad Water Leak Sensor is now available for immediate shipment this week (order it here).  We got the idea after talking with a customer who has bought tons of the 2nd gen Water sensor, and have been working on the product for over a year now. After many prototype iterations and a new clamshell (that itself went through 3~4 prototypes) to fit both this product and regular tags, everything is now finally ready. 

Application of this new product will not be limited to water leak detection. If you use tags to monitor fridge temperature and has encountered short battery life and other issues related to condensation damaging the tags, this product should also provide a big improvement for you. Because it uses a larger battery, CR2450 (620mAh vs. 225mAh of CR2032 used in regular tags), the battery change interval will be longer. Because it has high quality water and scratch resistant coating over the entire circuit board, condensation damage will completely be a thing of the past.  It is much smaller and less expensive than the Outdoor Probe which some of our customers were forced to choose to monitor fridge temperature to get longer battery life and resolve the condensation problem. 

If you have any feedback about this product please leave in the comment section. 


We have updated the server to optimize the water/moisture level measurement full-scale to allow better resolution, especially at higher % value for more accurate water level measurement.

Until today, the water/moisture sensor has been working fine to measure typical soil moisture for plants, but if you dip it into water to measure water level, the reading becomes well over 100% and the resolution decreases. Applying calibration can move the reading back to 0~100% range, but did not improve the resolution problem. 

With this optimization, without calibration, the sensor would report 0% when sensing surface is completely dry, and 100% when sensing surface is completely submerged into water. And the reading will reflect the actual water level with much greater precision and number of quantization steps than previously. If one intends to use it to measure soil moisture, one may want to re-define 100% using the "Calibrate" button at the maximum wetness possible for the type of soil. 

This optimization automatically takes effect for newly associated water sensors. For existing sensors, please disable moisture monitoring, click save, and re-enable moisture monitoring for this to take effect.