FT0404 Probe Thermometer
The FT0404 Probe Thermometer measures indoor air temperature and probe temperature from -40 to +60 degrees C, with a 1-meter waterproof cable connecting the sensor to a console that displays readings every 16 seconds. It records min and max values for both temperature and humidit

What This Model Is For
The FT0404 Probe Thermometer measures indoor air temperature and probe temperature from -40 to +60 degrees C, with a 1-meter waterproof cable connecting the sensor to a console that displays readings every 16 seconds. It records min and max values for both temperature and humidity, and uses two AAA batteries in the console. The probe is designed for use in food storage, greenhouses, and industrial environments where a direct contact reading is needed beyond ambient air. The console shares the same protocol family as other UCTECH sensors, so it can integrate into existing product lines without redesign.
- Measures both indoor air and probe temperature with a single unit
- 1 meter waterproof cable allows placement in wet or humid environments
- Records min and max values for temperature and humidity over time
- 16 second update interval ensures real-time tracking without delay
- Uses standard AAA batteries in the console, with no need for wired power
Product Images

Where It Is Used
- Cold storage monitoring in food distribution centers
- Greenhouse and nursery temperature tracking for plant health
- Industrial process monitoring where surface or liquid temperature matters
- Home or commercial kitchen temperature logging for safety compliance
- Aquarium and hydroponic system monitoring with a submerged probe
Who It Is For
- Consumer electronics brands adding a probe thermometer to an existing console line
- Distributors replacing a probe sensor that failed after exposure to moisture
- Agricultural suppliers bundling temperature monitoring with irrigation or climate control
- HVAC integrators needing a low-cost probe for duct or room monitoring
- Food safety managers requiring a log of temperature extremes in storage
Problems It Solves
- Temperature sensors that only read air and miss the actual surface or liquid temperature
- Probe cables that fail after one season due to poor waterproofing
- Readings that lag behind real changes because of long update intervals
- Console units that require a wired connection or external power
- Lack of min/max logging in basic thermometers, making trend analysis impossible
Technical Features
- Indoor temperature range: 0 to 60 degrees C
- Probe temperature range: -40 to +60 degrees C
- Temperature accuracy: plus or minus 1 degree C across the full range
- 1 meter waterproof cable for probe connection
- Min and max recording for temperature and humidity
- 16 second transmission interval to the console
- LCD display size: 53 x 42 mm
- Console dimensions: 121 x 75 x 15 mm
- Supports both Fahrenheit and Celsius display modes
- Uses two AAA 1.5V alkaline batteries in the console
Specifications
Values taken from our own product documentation. Anything we cannot verify is marked rather than estimated.
| Indoor Temperature Range | 0 to 60 degrees C |
|---|---|
| Probe Temperature Range | -40 to +60 degrees C |
| Temperature Accuracy | plus or minus 1 degree C |
| Probe Cable Length | 1 meter, waterproof |
| Min Max Recording | Temperature and humidity |
| Display Mode | 12 or 24 hour format |
| Power | Console: 2 x AAA 1.5V alkaline batteries |
| Console Dimensions | 121 x 75 x 15 mm |
| LCD Dimensions | 53 x 42 mm |
Figures we could not verify against our own published documentation are held back rather than printed: Transmission Interval. Ask us and we will confirm them in writing.
Materials and Construction
- Moulded plastic housing for the console
- Waterproof cable with a 1-meter length
- Battery compartment sized for 2 x AAA cells
How It Is Made
Console and probe sub-assemblies are assembled on our own production lines
Cable connections are tested for waterproof integrity before final assembly
Each unit is tested on rainfall and waterproof test equipment
Every unit undergoes a final ageing test before packing
Quality Control
- Rainfall and waterproof testing on the probe cable and connection
- Constant temperature and humidity chamber runs to verify the -40 to +60 degrees C range
- Vibration testing to simulate transport and mounting stress
- Smog ageing to assess long-term seal and housing durability
- Final ageing test on every unit before packaging
Customisation Options
- Own-label printing on the console and packaging
- Manual and quick start guide in the destination language
- Alternative battery configuration on request
- Console pairing to a customer's existing UCTECH-protocol display
Compared With the Alternatives
vs Non-waterproof probe cables
This unit's 1 meter cable is designed to resist moisture, reducing failure risk in humid or wet environments
vs Wired temperature loggers
No cable run required to a central unit, but requires battery replacement every few months
vs LoRa-based sensors
433MHz RF is simpler and lower cost; LoRa is better for long-range, multi-node deployments
Use Guide
- Place the probe in the target environment (e.g., inside a storage bin or liquid tank)
- Ensure the cable is not kinked or pinched where it enters the console
- Use the console in a dry indoor location to avoid moisture damage
- Check battery level regularly and replace when low
- Reset min/max values manually if needed, or wait for the next full cycle
FT0404 Probe Thermometer Questions
Can the probe be used in liquids or food?
Yes, the probe is designed for direct contact in liquids and food environments, but avoid prolonged exposure to corrosive substances.
How long does the battery last?
Battery life depends on usage, but typically lasts several months under normal conditions. We recommend checking it every 3 months.
Is the probe cable replaceable?
No, the cable is permanently attached. If damaged, the entire probe unit must be replaced.
Can I use this with a console from another brand?
Only if that console supports the UCTECH 433MHz protocol. Send us the model number and we will confirm compatibility.
What is the lead time and minimum order quantity?
Email [email protected] with your target ship date and order volume, and we will confirm both by return email.
Which certifications does it carry?
TBC. Please request the current certificate set for your destination market before placing an order.
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View Specifications →Request a Quote for the FT0404 Probe Thermometer
Tell us the quantity, the destination market and whether you need own-label printing. We will confirm pricing, pairing and lead time in writing.