This product is used to detect the surrounding environment of humidity and temperature. Features: DHT11 temperature sensor. Can detect the surrounding environment of humidity and temperature. Precision and reliability with good long-term stability. Digital release form. Built-in fixed bolt hole for easy installation. Connection cables are included. Features: Humidity measurement range: 20% ~ 90% RH Humidity measurement error: + -5% RH Working voltage: 3.3 ~ 5V Temperature measurement range: 0 ~ 60 Cel. Temperature measurement error: + -2 Cel. Module size: 32 * 14mm / 1.26 * 0.55in Package size: 45 * 45 * 20mm / 1.77 * 1.77 * 0.79in Package weight: 10g / 0.35 ounces Note: 1. Due to different display screens and lighting effects, the actual color of the item may be slightly different from the color shown in the photos. 2.Please allow a little measuring deviation. to manual measurement. Package list: 1 * DHT11 temperature sensor module 3 * connection cables