AM2305B Digital Temperature and Humidity Sensor
- The AM2305B is a digital temperature and humidity sensor that combines both temperature and humidity measurement into a single unit with calibrated digital signal output. It features a capacitive humidity sensing element and a DS18B20 temperature sensor, all controlled by a high-performance 8-bit microcontroller.
- Each AM2305B sensor undergoes precise calibration in a controlled humidity chamber to ensure accuracy. Calibration coefficients are stored in OTP (one-time programmable) memory, and the internal signal processing uses these coefficients for precise measurements. The sensor uses a single-wire serial interface, making system integration simpler and faster.
- With its ultra-small size, low power consumption, and impressive signal transmission range of up to 20 meters, the AM2305B is an excellent choice for a wide range of demanding applications. The product is equipped with three core shielded cables for added durability and reliable performance.
Application areas:
- Environmental monitoring
- Ventilator / respirator
- Anesthesia machine
- Spraying machine
- Medical apparatus and instruments
- The automatic control
- Experimental apparatus
Features:
- The product has excellent quality
- fast response
- anti-interference ability.
- Ultra-small size
- low power consumption
Specifications:
| Measuring Range | -40~80℃ |
|---|---|
| Interface | Digital |
| 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 |
| Resolution | 15X8X4 cm15X8X4 cm0.1 |
| Dimension(mm) | 150 X 80 X 40 |
Package Includes:
- 1 x AM2305B Digital Temperature and Humidity Sensor
Datasheet:
AM2305B Digital Temperature and Humidity Sensor Overview
The AM2305B is a compact digital sensor combining a capacitive humidity element and a DS18B20 temperature probe, calibrated for precise environmental measurements. Designed for 5 V operation with a single-wire serial interface, it’s ideal for embedded systems, data loggers, and automated climate monitoring.
Key Features of AM2305B Digital Temperature and Humidity Sensor
- Wide humidity range: 0 ~ 99.9 % RH with 0.1 % resolution
- Temperature span from –40 °C to 80 °C with 0.1 °C resolution
- Calibrated in controlled chambers; coefficients stored in OTP memory
- Single-wire digital interface for simplified microcontroller integration
- Low power consumption and ultra-small form factor
- Fast shipping from Zbotic
Applications and Use Cases
- Arduino or Raspberry Pi based weather stations
- Greenhouse and plant nursery climate control
- HVAC system monitoring and automation
- Cold-chain and refrigerated cabinet monitoring
- Industrial environmental data logging
- Server room or equipment rack humidity control
How to Use AM2305B Digital Temperature and Humidity Sensor
To set up, connect the sensor’s VCC pin to 5 V, GND to ground, and the data line to a microcontroller’s GPIO with a 4.7 – 10 kΩ pull-up resistor. Use a standard OneWire library to initiate temperature and humidity reads. The sensor returns calibrated 16-bit values—simply parse these to obtain real-time °C and % RH readings.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
How do I interface the AM2305B with an Arduino?
Connect VCC to the Arduino 5 V pin, GND to ground, and DATA to a digital I/O pin with a 4.7 kΩ pull-up resistor. Use a OneWire-compatible library to read temperature and humidity values.
What is the measurement resolution and range?
The sensor measures humidity from 0 % to 99.9 % RH and temperature from –40 °C to 80 °C, both at 0.1-degree or 0.1-percent resolution.
Is calibration required after purchase?
No external calibration is needed. Each AM2305B is factory-calibrated in a humidity chamber, and coefficients are stored in its on-chip OTP memory for accurate readings out of the box.
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Read More →Technical Specifications
| Model | AM2305B |
|---|---|
| SKU | AI0449 |
| Weight | 0.1066 kg |
| Availability | In Stock |
Applications & Use Cases
The AM2305B Digital Temperature and Humidity Sensor is a versatile temperature & humidity sensor used across a wide range of applications including weather stations, greenhouse monitoring, HVAC systems, cold chain logistics, and server room monitoring.
Common use cases:
- Building a home weather station with Arduino
- Monitoring greenhouse conditions via IoT
- Alerting when server room temperature exceeds threshold
This product is ideal for IoT developers, agricultural engineers, and home automation enthusiasts.
Technical Tip: DHT22 offers better accuracy than DHT11. For precision applications, use SHT31 or BME280. Ensure adequate ventilation around the sensor.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Himanshu Khurana (verified owner) –
This AM2305B Digital Temperature and Humidity Sensor is excellent for the price. My data logging project is working perfectly now.
Lokesh Tiwari (verified owner) –
Superb AM2305B Digital Temperature and Humidity Sensor! Using it in my environmental monitoring system. Very reliable data.
Bhavna Jain (verified owner) –
Very satisfied with this AM2305B Digital Temperature and Humidity Sensor. Library support is good and it’s easy to interface.
Kritika Solanki (verified owner) –
Great AM2305B Digital Temperature and Humidity Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Saurabh Khurana (verified owner) –
Great quality AM2305B Digital Temperature and Humidity Sensor. Calibrated it easily and the accuracy is impressive.
Kartik Menon (verified owner) –
Perfect AM2305B Digital Temperature and Humidity Sensor for my automation project. Integrates seamlessly with my microcontroller.
Anil Reddy (verified owner) –
Love this AM2305B Digital Temperature and Humidity Sensor. Response time is fast and readings are stable.
Ankit Naidu –
Great AM2305B Digital Temperature and Humidity Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Harshit Patel –
Superb AM2305B Digital Temperature and Humidity Sensor! Using it in my environmental monitoring system. Very reliable data.
Aanya Trivedi (verified owner) –
Outstanding accuracy from this AM2305B Digital Temperature and Humidity Sensor. Compared with a professional instrument, readings match closely.
Hemant Khanna (verified owner) –
Perfect AM2305B Digital Temperature and Humidity Sensor for my automation project. Integrates seamlessly with my microcontroller.
Sumit Rathore (verified owner) –
Bought this AM2305B Digital Temperature and Humidity Sensor for my college project. Accurate readings, easy to code. Very happy!
Yash Verma (verified owner) –
Pretty good AM2305B Digital Temperature and Humidity Sensor. Documentation could be better but the sensor itself is solid.
Saurabh Hegde (verified owner) –
Excellent sensitivity and range on this AM2305B Digital Temperature and Humidity Sensor. Works better than I expected.
Naveen Dubey –
Nice AM2305B Digital Temperature and Humidity Sensor. Readings are mostly accurate. Good enough for my hobby project.
Vidya Dubey –
Superb AM2305B Digital Temperature and Humidity Sensor! Using it in my environmental monitoring system. Very reliable data.
Prateek Pandey (verified owner) –
Perfect AM2305B Digital Temperature and Humidity Sensor for my automation project. Integrates seamlessly with my microcontroller.
Girish Goyal (verified owner) –
This AM2305B Digital Temperature and Humidity Sensor works great with Arduino. Easy to wire up and code.
Lakshya Pandey (verified owner) –
Great AM2305B Digital Temperature and Humidity Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Sachin Das –
Love this AM2305B Digital Temperature and Humidity Sensor. Response time is fast and readings are stable.
Paras Malhotra (verified owner) –
Love this AM2305B Digital Temperature and Humidity Sensor. Response time is fast and readings are stable.
Krishna Solanki (verified owner) –
Very satisfied with this AM2305B Digital Temperature and Humidity Sensor. Library support is good and it’s easy to interface.
Tushar Mittal (verified owner) –
Average AM2305B Digital Temperature and Humidity Sensor. Readings fluctuate a bit. Works for rough measurements.
Sachin Sethi (verified owner) –
Excellent AM2305B Digital Temperature and Humidity Sensor! Readings are accurate and consistent. Perfect for my project.
Rakesh Patil (verified owner) –
Superb AM2305B Digital Temperature and Humidity Sensor! Using it in my environmental monitoring system. Very reliable data.
Sunil Choudhury (verified owner) –
This AM2305B Digital Temperature and Humidity Sensor is excellent for the price. My data logging project is working perfectly now.
Dinesh Saini (verified owner) –
This AM2305B Digital Temperature and Humidity Sensor works great with Arduino. Easy to wire up and code.
Hitesh Verma –
Superb AM2305B Digital Temperature and Humidity Sensor! Using it in my environmental monitoring system. Very reliable data.
Rashmi Patel (verified owner) –
Great quality AM2305B Digital Temperature and Humidity Sensor. Calibrated it easily and the accuracy is impressive.
Paras Bhatt (verified owner) –
Nice AM2305B Digital Temperature and Humidity Sensor. Readings are mostly accurate. Good enough for my hobby project.
Vaishali Reddy (verified owner) –
Average AM2305B Digital Temperature and Humidity Sensor. Readings fluctuate a bit. Works for rough measurements.
Shubham Vohra (verified owner) –
Decent AM2305B Digital Temperature and Humidity Sensor for the price. Requires proper wiring but works well once set up.
Sumit Patel –
This AM2305B Digital Temperature and Humidity Sensor works great with Arduino. Easy to wire up and code.
Daksh Mittal (verified owner) –
Great quality AM2305B Digital Temperature and Humidity Sensor. Calibrated it easily and the accuracy is impressive.
Nitin Chopra –
Great AM2305B Digital Temperature and Humidity Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Isha Kohli (verified owner) –
Pretty good AM2305B Digital Temperature and Humidity Sensor. Documentation could be better but the sensor itself is solid.
Lakshmi Nayak (verified owner) –
Perfect AM2305B Digital Temperature and Humidity Sensor for my automation project. Integrates seamlessly with my microcontroller.
Sameer Nayak (verified owner) –
Excellent AM2305B Digital Temperature and Humidity Sensor! Readings are accurate and consistent. Perfect for my project.