4-mil thickness moisture proof pouch for using Wireless Sensor Tags outdoor or in other high humidity environment (cannot be submerged into water). 

Placed outdoor, even when not directly exposed to rain, condensation every morning can quickly drain the battery and corrode/permanently damage the sensor.  This also applies to fridge/freezer with condensation/icing issue. 

This heavy duty moisture proof pouch fits snugly with regular Wireless Sensor Tag (2x2'' size) or External Power and PIR Kumo-Sensor (2x4'' size), and when properly closed, will allow use outdoor locations with good drainage, such as yard gate, mail box, for up to 1 year.