Feature(may vary by option.)
●This plant hygrometer can be used just by placing it in a pot, without using batteries●When water is sufficient, the indicator will turn blue and the blue color turns white when water is out of water●The core material is 100% natural fibers, breaking down by bacteria in the soil●Estimated life of the middle core is about 6-9 months on organic soil, about 9-12 months on inorganic soil, and hydroculture, and bark are about 1-2 years●When the core reaches its life, it can be replaced with a separate refill[white 2 Comes with 2 portable pouches]
![](https://m.media-amazon.com/images/I/31Xk6TsmBJL._AC_.jpg)
[white Single Item]
![](https://m.media-amazon.com/images/I/11z6SP6x+QL._AC_.jpg)
[green Single Item]
Description Medium sustea recommended for 4-6 pots.
A little more muted green than new buds. It is the same color as the leaves and will catch it.
Model Number: C-0012-GR; Operating Temperature Range: 12°F - 104°F (5°C - 40°C); Humidity Range: 20% - 80%; Size: W 0.4 x D 0.3 x H 7.1 inches (10 x 8 x 180 mm); Weight: Approx. 0.2 oz (6 g).
Estimated replacement: Approximately 6 to 9 months.