- Economical Pen-style Probe Design
- Measures Temperature and Relative Humidity
- Available Outputs:
4-20 Ma (ST-141)
0-10 Vdc (ST-101) - Compatible With PLCs, Data Loggers, and BAS Systems
- IP67 Enclosure for Industrial Environments (Sensor Excluded)
- Cleanable Sensor Filter for Long Operating Life
- Includes 36 Inches (914 Mm) of Lead Wire
- Includes Wire Splice Connectors for Extending Cable Length
- Simple Wall Mounting With Included Hardware
The IOThrifty Pen Style Temperature & Humidity Probe is an industrial temperature and humidity transmitter designed for reliable environmental monitoring in HVAC systems, data centers, laboratories, and industrial facilities.
This compact probe measures ambient temperature and relative humidity and converts the measurements into industry-standard analog signals (4-20 mA or 0-10 V) for easy integration with PLCs, data loggers, building automation systems (BAS), and environmental monitoring systems.
The rugged probe features an IP67 housing (excluding the sensing element) and a cleanable protective filter to ensure long-term stability and durability in demanding environments.
Each probe includes 36 inches of lead wire and wire splice connectors, allowing installers to easily extend the cable length when connecting to control panels, data acquisition systems, or monitoring equipment.
Two versions are available:
ST-141 : Two 4-20 mA outputs; one for temperature & one for relative humidity
ST-101: Two 0-10 Vdc outputs; one for temperature & one for relative humidity
Ideal Applications
This probe is commonly used for environmental monitoring and process control, including:
- HVAC temperature and humidity monitoring
- Data center environmental monitoring
- Building automation systems
- Cold storage and food storage facilities
- Poultry farms and agricultural automation
- Incubation rooms
- Clean rooms and laboratories
- Air conditioning cabinets and control panels
Maintaining proper humidity and temperature levels in data centers and server rooms is critical to prevent condensation, overheating, and equipment failures. This probe provides an easy way to integrate environmental monitoring into a data logging system or building management system (BMS).
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| PART NUMBERS | DESCRIPTION |
ST-141 |
Humidity and Temperature Transmitter with 4-20mA Outputs |
| ST-101 |
Humidity and Temperature Transmitter with 0-10Vdc Outputs |
| Downloads |
| ST101/141 Data Sheet and User Guide |
SPECIFICATIONS
Output Signal: 0-10 Vdc (ST-101) or 4-20 mA (ST-141)
Temperature Measurement Range:-10°C to +55°C
Temperature Accuracy: ±0.3°C
Temperature Resolution: ±0.1°C
Humidity Measurement Range: 0 – 100%RH(non-condensing)
Humidity Accuracy: ±3 %RH
Humidity Resolution: ±1 %RH
Storage Temperature: -20°C to +60°C
Protection Class: IP67 (excluding sensor element)
Lead Wire Length: 36 inches (914 mm)
Supply Voltage: 12–24 Vdc
Sensor Body Material: ABS Plastic
Cable Extension: Includes wire splice connectors
Startup Time: ~30 seconds