DHT11, DHT22, AM2301 or AM2302 Temperature and Humidity Sensor, Bare or Module

DHT11: The DHT11 digital temperature and humidity sensor is a temperature and humidity composite sensor with a calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure high reliability and excellent long-term stability. The sensor consists of a resistive wet sensor and an NTC temperature sensor connected to a high performance 8-bit microcontroller. Therefore,the product has the advantages of excellent quality,ultra-fast response,strong anti-interference ability and high cost performance. Each DHT11 sensor is calibrated in an extremely accurate humidity calibration chamber. The calibration coefficients are stored in the OTP memory as a program,and these calibration coefficients are called internally during the processing of the detection signal. The single-wire serial interface makes system integration easy and fast. Ultra-small size,extremely low power consumption,and signal transmission distances of up to 20 meters make it the best choice for even the most demanding applications. The product is available in a 4-pin single-row lead package. Product Features: Relative humidity and temperature measurement All calibration,digital output Excellent long-term stability No extra parts required Extra long signal transmission distance Ultra low energy consumption 4-pin mounting Completely interchangeable DHT22: Product parameters: Humidity measurement range: 0% to 99.9% (0°C-50°C range) Humidity measurement error: ±2% Temperature measurement range: -40 ° C ~ 80 ° C Temperature measurement error: ±0.5°C max ±1°C Resolution: 16 bits Sampling period: 2s Working voltage: 3V--5.5V AM2301: Product Features: The AM2301 Humidity Capacitance Digital Temperature and Humidity Sensor is a temperature and humidity composite sensor with a calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure high reliability and excellent long-term stability. Therefore,the product has the advantages of excellent quality,fast response,strong anti-interference ability and high cost performance. Each sensor is calibrated in a precision humidity calibration chamber. The calibration coefficients are stored in the OTP memory as a program,and these calibration coefficients are called internally during the processing of the detection signal. The sensor consists of a capacitive sensing element and an NTC temperature measuring element connected to a high performance 8-bit microcontroller. Communication with the microprocessor via a single bus requires only one line,40 bits of data at a time,high first out. Small size,low power consumption,long communication distance,can be used in demanding applications. Product parameters: Humidity measurement range: 0% to 99.9% (0°C-50°C range) Humidity measurement error: ±3% Temperature measurement range: -40 ° C ~ 80 ° C Temperature measurement error: ±0.3 °C Resolution: 16 bits Sampling period: 2s AM2302B: Product parameters: Temperature range: -40~80°C Humidity range: 0~99.9%RH Temperature detection accuracy: ±0.5 °C Humidity detection accuracy: ±2% RH Resolution: 0.1 ° C; 0.1% RH Sampling period: 2s Output signal: digital signal single bus Supply voltage: DC3.3~5.5V ESP8266 ESP-01 ESP-01S DHT11 Temperature and Humidity WiFi Node Without Wireless Module U40 For Arduino Description: This module uses ESP8266-01 / ESP-01S as the main control,and DHT11 is the temperature and humidity sensor. ESP8266 collects the temperature and humidity in the collected environment and uploads it to the server. Support 3.7v-12V DC power supply (3.7V lithium battery). Can be used as a temperature and humidity collection node for smart home or IOT projects. Characteristic: • Master control: ESP-01 / ESP-01S (This module does not include ESP-01 / ESP-01S) • Temperature and humidity sensor: DHT11 • Working voltage: DC 3.7V-12V (support 3.7v lithium battery power supply) • Measuring range: 20-90% RH 0-50 ° C • Measurement accuracy: temperature: ± 2 ° C,humidity ± 5% RH Application example: 1. Power supply: 3.7V-12V DC power connected to VCC GND (2.54mm pin header) 2. Download the program to ESP-01S (this connection does not include this wireless module) 3. Insert ESP-01 / ESP-01S (this connection does not include this wireless module) into the 2 • 4 Pin header (in the direction of the arrow)