Short Description
ASAIR AHT20 sensor (±0.3°C / ±2% RH) inside our waterproof cable-gland housing. I2C interface, outdoor use. Ships with 1-metre 4-core shielded cable.
Description
The T-AHT20-W combines the ASAIR AHT20 digital temperature and humidity sensor with our waterproof cable-gland housing. The sensor measures temperature within ±0.3°C and humidity within ±2% RH and communicates over I2C at address 0x38 (fixed).
Brass adapter body with a sealed cable gland on top and a breathable plastic mesh filter at the sensing end. Designed for outdoor inline cable mounting where the cable run needs to be sealed against water and dust. The probe ships with a 1-metre 4-core shielded cable terminated in bare-tinned wire ends (Red: VCC, Black: GND, Yellow: SDA, Green: SCL) for connection to ESP32, Arduino, Raspberry Pi, STM32, or any I2C-capable host. Typical applications include outdoor weather stations, irrigation, agriculture, greenhouse monitoring, balcony and garden sensors, and outdoor IoT networks.
Technical Specifications
| Brand | Tarangify |
| SKU | T-AHT20-W |
| Sensor | ASAIR AHT20 |
| Measurements | Temperature, Humidity |
| Temperature Accuracy | ±0.3°C |
| Humidity Accuracy | ±2% RH |
| Temperature Range | -40 to 85°C |
| Humidity Range | 0 to 100% RH |
| Resolution | 20-bit |
| Operating Voltage | 2.2V to 5.5V |
| Interface | I2C |
| I2C Address | 0x38 (fixed) |
| Heater | No |
| Housing | Brass adapter body with cable gland on top |
| Filter | Plastic mesh breathable filter |
| Mounting | Inline cable mounting (gland accepts 3–6.5mm cable) |
| Dimensions | Approx. 18mm OD × 70mm length |
| Use | Outdoor |
| Cable | 1-metre 4-core shielded cable, 22 AWG |
| Wire Colours | Red: VCC, Black: GND, Yellow: SDA, Green: SCL |
| Cable Termination | Bare-tinned wire ends (other terminations on request) |
| Origin | Made in India |
Applications
- Outdoor weather stations
- Drip irrigation and smart agriculture
- Greenhouse and polyhouse monitoring
- Balcony, garden, and outdoor environment sensors
- Smart-city outdoor sensor networks
- Livestock shed and dairy environment monitoring
- LoRaWAN, NB-IoT, and Zigbee outdoor deployments
Wiring
The probe ships with a 4-core shielded cable terminated in bare-tinned wire ends. Connect as follows for a 3.3V I2C host (ESP32, Raspberry Pi, STM32, RAK Wireless, or Arduino with level-shifter):
| Red | VCC — 3.3V supply |
| Black | GND — ground |
| Yellow | SDA — I2C data (4.7 kΩ pull-up to 3.3V recommended) |
| Green | SCL — I2C clock (4.7 kΩ pull-up to 3.3V recommended) |
Software
Compatible with the Adafruit AHTx0 library (covers AHT10, AHT20, AHT21), the ESP-IDF aht20 component, and the MicroPython aht20 driver.
Warranty
14-day replacement warranty against manufacturing defects from the date of delivery. Damage from reverse polarity, over-voltage, or use beyond the rated environmental conditions is not covered.
Frequently Asked Questions
Q: What does this probe ship with?
A: Each probe ships with a 1-metre 4-core shielded cable. The cable terminates in bare-tinned wire ends — Red (VCC), Black (GND), Yellow (SDA), Green (SCL). If you need a JST-XH or Dupont termination, leave a note on your order.
Q: What is the warranty?
A: Tarangify products carry a 14-day replacement warranty against manufacturing defects from the date of delivery. Damage from reverse polarity, over-voltage, or use beyond the rated environmental conditions is not covered.
Q: Can I order longer cable lengths?
A: Yes. 2-metre and 5-metre cables are available as paid options. Custom lengths can be made to order — contact us with your requirement.
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