The BLUELAB GUARDIAN MONITOR XBEE2 Radio is a plant care accessory designed to monitor soil moisture levels and pH levels in real-time. The Bluelab brand is known for its high-quality and reliable monitoring systems, making the GUARDIAN MONITOR XBEE2 a trusted choice for gardeners and plant enthusiasts. With its advanced technology and easy-to-use features, this monitor ensures that your plants receive the ideal amount of water and nutrients for optimal growth and health.