Temperature Sensor
| SKU | PP-TEMP |
|---|---|
| Product line | PIERRE Pro |
| Category | Sensors / Temperature & Humidity sensors |
| Manufacturer | JLCPCB |
| GTIN / EAN | 8606034720536 |
| HS code | 9032102000 |
Overview
The PIERRE Pro Temperature Sensor is engineered to offer accurate temperature readings from -55°C to +125°C, with robust protections ensuring stable operation. Its compact design allows easy integration into systems, while the 5V DC input with polarity protection ensures resilience against incorrect connections.
Additional features include overvoltage (up to 12V DC) and overcurrent protection, along with short circuit safeguards, enhancing its reliability for industrial and residential use. Operating effectively in humidity levels from 5% to 90% RH (non-condensing), it performs well at altitudes below 3000m.
Key features
5V DC input, -55°C to +125°C range, humidity range 5%-90% RH, overvoltage and short circuit protection, reverse polarity protection.
Technical specifications
| Environmental | |
|---|---|
| Operating Temperature (°C) | -55 - +125 |
| Operating Temperature | -67°F - +257°F |
| Operating Humidity | Non condensing, 5 - 90 % RH |
| Altitude | <3000m |
| Safety | |
| Safety Features | Over Voltage, Short Circuit, Reverse polarity |
| Sensors | |
| Built-in Sensors | Temperature |
Pin layout
| Pin | Label | Type | Position |
|---|---|---|---|
| 1 | 5V+ | 5V_pwr_in | top |
| 2 | Sig | bus_rx | top |
| 3 | GND | input_5v_gnd | top |
Physical & packaging
| Dimensions (L × W × H) | 38.5 × 6 × 12.5 mm |
|---|---|
| Weight | 3 g |
| Box dimensions (L × W × H) | 40 × 10 × 20 mm |
| Box weight | 5 g |
User manual
- 1. Dimensions
- 2. What you need
- 3. Product specifications
- 4. Wiring
- 5. Adding a new Temperature Sensor
- 6. Video
- 7. FAQ
1. Dimensions
- W: 1.25 cm
- H: 3.85 cm
- D: 0.6 cm
2. What you need
Wired. Needs a PIERRE PRO or LITE Controller with a free Configurable I/O (digital) pin, plus the Temperature Sensor. The sensor is powered from the controller’s 5 V rail.
3. Product specifications
4. Wiring
The temperature sensor has three main pins: Power +, Power –, and Output.
The Power + pin is connected to the controller's 5V output, depending on the sensor's voltage requirement.
The Power – pin is connected to the controller's GND (ground) to complete the power circuit.
The Output pin is wired to one of the controller’s analog input pins for reading temperature data.
| Run | Wires | Cross-section | Cable type | Conductors |
|---|---|---|---|---|
| From temperature sensor to PIERRE Controller | 3 | 0.2 mm² (24 AWG) | Cat 5 U/UTP | +5 V, GND, SIGNAL |
One run, three conductors: 5 V, ground and signal. A single Cat 5 U/UTP cable carries it — three of its eight conductors are used, the rest left spare. Maximum length 100 m. Do not run the data cable alongside high-voltage cable.
5. Adding a new Temperature Sensor
- Choose Controller
- Tap on the Controller that you would like to add new I/O to.
- To edit the I/O, click on the Controller to which the I/O is added.
- Configurable I/O - list
- Tap on the Configurable I/O tab.
- Tap on the Configurable I/O tab.
- Add button - Configurable I/Os
- Tap on the Add button.
- Choose type - Configurable I/O list
You should choose the type of the I/O from the list that you would like to add.
- New Temperature sensor - DS18B20
Fill the following form:- Name - Write the name of the Temperature sensor.
- Roles - Select the Role from the list.
- Pin - Choose Pin. It is physical place on the Controller where I/O is connected to it.
- Identifier - Enter the identifier of the I/O in the electrical project in this field.
- Address - Tap on +/-.
For more details follow next steps.
To confirm your choice tap Submit and Save.
- Select Roles
- You can select desired Role or Roles - multiple choice if you tap on the checkboxes next to them.
- Tap on Save/Done.
- Choose Pin
- Tap on the radio button next to the Pin that you would like to choose.
- To confirm selection tap on Save/Done.
6. Video
Wiring and commissioning the wired temperature sensor. https://www.youtube.com/watch?v=30_4cPK_UmE
Temperature sensor: wiring and configuration, part 2. https://www.youtube.com/watch?v=ZwX1gah_huc
7. FAQ
Q1: The sensor gives no reading. What do I check first?
Check GND, +5 V and the data conductor at the controller. The supply must be +5 V; if the polarity is reversed, swap it.
Q2: How do I make sure the conductors are not swapped between PIERRE and the sensor?
Trace them with an acoustic wire detector and tone generator.
Q3: Can other devices share the sensor’s pin?
Only other DS18B20 sensors, each with its own address. Remove anything else from that Configurable I/O pin.
Q4: How do I check that the sensor is receiving power?
Measure at the sensor end between GND and 5 V, and between data and GND. Both should read about 5 V. If not, check the wiring.
Q5: There is no signal at all. What should I check?
Confirm the conductors are landed on the controller and that the sensor sits on a Configurable I/O pin, not on a 12 V input. Wait 5–10 seconds for the first measurement. If nothing appears, move the sensor to another Configurable I/O pin or replace it. If a second sensor is on the same controller, swap them to find out whether the fault is the wire or the sensor.
Q6: What supply voltage does this sensor need?
5 V from the controller.
Q7: What is the maximum cable length?
100 m on Cat 5 U/UTP. Do not run the data cable next to high-voltage cable.
Q8: When should input and output be on the same controller?
If one input influences an output, both should be added to the same controller. A motion sensor triggering a lamp, for example, performs best when both sit on the same controller.
Q9: What are configurable IOs?
The Configurable I/O pins on the PIERRE Controller carry digital sensor and control signals, for example the DS18B20 temperature sensor, the BH1750 brightness sensor and 0–10 V control.
Q10: Where should the sensor be installed?
At eye level, away from draughts and external walls.
Q11: How accurate is it?
See the Product specifications. Wired and wireless versions are available.
Q12: How many sensors do I need?
At least one for basic heating or cooling control. In practice, one per zone or room where you want individual control.
Q13: Does it need calibrating?
Not always necessary, but often useful. Skip it if the sensor is factory-calibrated to ±0.5 °C or better, the application is ordinary comfort heating or cooling, and the mounting position is good. Calibrate if the reading disagrees with a reference thermometer, if the sensor sits where electronics, sunlight or poor airflow affect it, or if the system needs precise control. In the Smart PIERRE app calibration is optional — the offset is there so you can fine-tune it.