The Whadda WPSE311 DHT11 temperature and humidity sensor features a calibrated digital signal output with the temperature and humidity sensor complex. Its technology ensures the high reliability and excellent long-term stability. A high-performance 8-bit micro-controller is connected. This sensor includes a resistive element and a sense of wet NTC temperature measuring devices. It has excellent quality, fast response, anti-interference ability and high cost performance advantages. * Voltage: 5V DC * Temperature range: 0 - 50 °C , error of +/- 2 °C * Humidity: 20 - 90% RH +/- 5% RH error * Interface: digital * Dimensions: 39 x 23 x 10 mm