Precise Reading keep peace of mind with built-in Swiss-made SHT30 sensor, it provides accurate monitoring that you can trust. The temperature is accurate to ±0.5℉ and the humidity is ±3%RH. Highly accurate monitoring offers you a chance to stay the self-organized terrarium system in a proper environment. Plus, up to 2s responsive speed always show you the latest readings. Thus timely adjustment for air comfort can be taken. No doubt that your mini succulents will grow up healthily with such careful protection.