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

Supported Device Type: Transight Telematics Devices with 1-Wire Support

Sensor Model: AM2305

Sensor Type: Digital Temperature & Humidity Sensor

⚠️ Note: Only one AM2305 sensor can be connected to any Transight device with 1-Wire capability.

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.