AM2302 Temperature & Humidity Sensor
AM2302 Temperature & Humidity Sensor The AM2302 temperature and humidity sensor is a digital sensor that measures both temperature and humidity. It uses a capacitive humidity sensor and a thermistor to measure the humidity and temperature, respectively. The sensor communicates with a microcontroller or other host device using a digital protocol such as the Single Wire Protocol (SWP) or the Inter-Integrated Circuit (I2C) protocol. The sensor can operate over a wide range of temperatures and humidities, and it has high accuracy and a fast response time. It is commonly used in applications such as weather stations, HVAC systems, and industrial process control. The sensor includes a capacitive humidity sensing element and an NTC temperature measuring element, connected with a high-performance 8-bit single-chip microcomputer, so it has the advantages of ultra-fast response and strong anti-interference ability. Low cost, 3 to 5v power and i/o, 2.5ma max current use during conversion. 1-1.5ma measuring current, 40-50 ua standby current. It has only 3 wires, including power and ground, meaning only one digital pin is required to interface it to a microcontroller. Applications: HVAC Dehumidifier Weather station Humidity regulator Medical treatment Home appliances Package Includes: 1 x AM2302 Temperature & Humidity Sensor Specifications: Operating voltage 3.3V to 5V DC Operating temperature range -40°C to 80°C (-40°F to 176°F) Operating humidity range 0% to 100% RH (relative humidity) Dimensions 3 x 2 x 1cms Weight 9 grams
- Good for 0-100 percent humidity readings with 2-5 percent accuracy.
- Good for -40 to 80 degree celsius temperature readings ± 0.5 degree celsius accuracy.
- No more than 0.5 hz sampling rate (once every 2 seconds).
- 4-pin single-row pin package for easy connection
- Signal transmission distance can reach more than 20 meters, making it the best choice for various applications
- 1 x AM2302 Temperature & Humidity Sensor