ST9 Temperature and Humidity Sensor
The ST9 is a rechargeable Bluetooth LE sensor with an external probe for monitoring temperature and humidity in refrigerators, greenhouses, and similar environments.
ST9 Temperature and Humidity Sensor
The ST9 is a rechargeable Bluetooth LE sensor with an external probe for monitoring temperature and humidity in refrigerators, greenhouses, and similar environments.
Core Functions
- Measures temperature and relative humidity through an external probe.
- Sends readings over Bluetooth LE.
- Uses a rechargeable 1800 mAh lithium battery.
Product Appearance
The diagram identifies the charging port, Setup pinhole, probe port, and built-in indicator light.
Specifications
| Specification | Details |
|---|---|
| Model | ST9 |
| Wireless Protocols | Bluetooth LE |
| Wireless Range | 131 ft (40 m), line-of-sight |
| Dimensions | 2.4 × 2.4 × 0.7 in (L × W × H) |
| Weight | 76 g, including the probe |
| Battery | 3.7 V, 1800 mAh lithium battery (rechargeable) |
| Charging Input | Micro-USB, 5 V / 1 A |
| Cable Length | 4.9 ft (1.5 m) |
| Temperature Measuring Range | -40°F to 221°F (-40°C to 105°C) |
| Temperature Accuracy | ±0.5°F (±0.3°C, typical) |
| Humidity Measuring Range | 0% to 100% RH, non-condensing |
| Humidity Accuracy | ±3% RH (typical) |
| Water Resistance | External probe is IP67; sensor body is not waterproof |