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TEMPERATURE / HUMIDITY SENSOR

CAT # SEN-4 (4 Reviews) Write a Review

$3.50 each
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Product Description
Digital temperature and humidity sensor consists of a capacitive sense element and a precision wet NTC temperature measurement device with a high-performance 8-bit microcontroller connected. Standard single-bus interface, the system integration becomes simpler and quicker. Small size, low power consumption, signal transmission distance up to 20 meters, making it suitable for a wide range of applications.

· Model AM2302
· Power supply: 3.3-5.5 Vdc
· Output signal: via 1-wire bus
· Sensing element: Polymer humidity capacitor
· Operating range: humidity 0-100%RH; temperature -40~80Celsius
· Accuracy: humidity +-2%RH(Max +-5%RH); temperature +-0.5Celsius
· Resolution or sensitivity: humidity 0.1%RH; temperature 0.1Celsius
· Repeatability: humidity +-1%RH; temperature +-0.2Celsius
· Humidity hysteresis: +-0.3%RH
· Long-term Stability: +-0.5%RH/year
· Interchangeability: fully interchangeable
Spec sheet available in PDF format.
WARNING: May cause cancer or reproductive harm.
California Prop. 65
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Customer Reviews (4 Reviews)

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SEN-4 Sensor

Reviewer: from Tennessee

The sensor that I received is a DHT-11 - at least it is behaving like one. Will not function using Arduino Uno and set as DHT-22. Works fine when set as DHT-11.

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Works as DHT-11 (code included)

Reviewer: from SN LUIS OBISP, CA USA

It definitely behaves like a DHT-11. After installing the Adafruit sensor library and dht library, this code will get it working off of pin 2 on an Uno:

#include "DHT.h"

DHT dht(2,DHT11);

void setup()
{
Serial.begin(9600);
dht.begin();
}

void loop()
{
float h,t;
delay(2000);

h = dht.readHumidity();
t = dht.readTemperature();

Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" Temp: ");
Serial.println(t);
}

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Temperature and humidity sensor

Reviewer: from Hammond, La. USA

This offering would be much more appealing if it came with a pre programmed mcu to go with the sensors.

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Does not match data sheet

Reviewer: from Albuquerque, NM USA

Unfortunately, these do not work like the data sheet says. According to the data sheet, the output is 2 bytes of H data followed by 2 bytes of T data, and then followed by a 1 byte check sum. You do get 5 bytes of output. However, there is only 1 byte of H data, followed by a zero byte, then 1 byte of T data, followed by a zero byte. Both data bytes appear to be more or less correct, as does the checksum, but you are limited to a resolution of 1% in H and 1C in T. The data sheet promises a resolution 10 times that.

3 of 3 people found this review helpful. Do you? Yes No


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