AM2305 DIGITAL TEMPERATURE & HUMIDITY SENSOR
Introduction to the product
AM2305 Digital Temperature & Humidity Sensor is a temperature and humidity combined sensor been calibrated digital signal output. The sensor includes a capacitive sensor wet components and a DS18B20 temperature measurement device and connected with a high-performance 8-bit microcontroller. Each AM2305 sensors are an extremely accurate humidity calibration chamber for calibration. Calibration coefficients stored in the form of a program in OTP memory, internal sensor detection signal processing to call these calibration coefficients. The single-wire serial interface, system integration becomes simpler and quicker. Ultra-small size, low power consumption, signal transmission distance up to 20 meters or more, making it the best choice of even the most demanding applications in a variety of applications then, the product leads to three core shielded cables.
Product Specifications
| Parameters | Value |
|---|---|
| Power Supply | 5V |
| Measuring Range | .-40~80℃ |
| Interface | Digital |
| Digital | ±0.3℃; ±3% RH |
| Temperature Range | .-40~80℃ |
| Accuracy | ±0.3℃;±3%RH |
| Features | Metal screen/capacitance sensor |
| Sensor Type | AHT10 integration sensor |
| Output | Digital Sensor, Digital 1 Wire |
| Humidity Range | 0~99.9%RH |
| Wiring | Red - Power supply
Yellow - Data
Black - Ground
|
Configuration Guide
Before configuring, ensure that the AM2305 sensors are connected to the Transight telematics device as per the sensor pinout. Improper wiring may lead to failed communication or sensor detection issues.
Step 1: Enable 1-Wire Sensor Interface
This command activates the 1-Wire port for sensor communication.
Command:
SET CUENOW:ON
Expected Response:
IMEI: 862942074896044 Command: SET CUENOW:ON Response: Error : 0
Verification Command:
GET CUENOW
Expected Verification Response:
IMEI: 862942074896044 Command: GET CUENOW Response: ENOW:ON Error : 0
Step 2: Configure Sensor Model
Set the sensor type to AM2305.
Command:
SET CUOWCFG:AM2305
Expected Response:
IMEI: 862942074896044 Command: SET CUOWCFG:AM2305 Response: Error : 0
Verification Command:
GET CUOWCFG
Expected Verification Response:
IMEI: 862942074896044 Command: GET CUOWCFG Response: OWCFG: AM2305 Error : 0
Step 3: Specify Number of Connected Sensors
Define the number of connected 1-Wire sensors (only 1 allowed for AM2305).
Command:
SET CUOWNOS:1
Expected Response:
IMEI: 862942074896044 Command: SET CUOWNOS:1 Response: Error : 0
Verification Command:
GET CUOWNOS
Expected Verification Response:
IMEI: 862942074896044 Command: GET CUOWNOS Response: TEMPERATURE SENSOR NOS: 1 Error : 0
Mandatory Finalization Step
Apply and save all sensor settings.
Command:
SET TSMR:2
Post-Configuration Validation Checklist
After configuration:
- 🔄 Monitor incoming device packets.
- 🌡️ Ensure temperature and humidity values appear in payload.
- 📈 Confirm periodic updates from the sensor.
- ✅ Verify data consistency and accuracy via backend or cloud platform.