FT0303 Wireless Thermo-Hygrometer
The FT0303 Wireless Thermo-Hygrometer measures indoor and outdoor temperature and humidity with a 433MHz wireless link. The outdoor sensor operates from -40 to +60 degrees C and 10 to 99 percent RH, sending updates every 60 seconds to a console that can support up to eight sensor
What This Model Is For
The FT0303 Wireless Thermo-Hygrometer measures indoor and outdoor temperature and humidity with a 433MHz wireless link. The outdoor sensor operates from -40 to +60 degrees C and 10 to 99 percent RH, sending updates every 60 seconds to a console that can support up to eight sensors. The indoor receiver runs on four AAA batteries and can be placed freely or mounted on a wall. It records min and max outdoor temperature and triggers alarms when indoor or outdoor conditions exceed user-set thresholds.
- Measures both indoor and outdoor temperature and humidity in one system
- 60 second update interval keeps readings current without overloading the RF link
- Supports up to eight sensors on a single console, ideal for multi-zone monitoring
- Outdoor sensor operates from -40 to +60 degrees C, suitable for cold climates
- Low power design extends battery life across both sensor and receiver
Where It Is Used
- Home and office climate monitoring for HVAC and comfort control
- Greenhouse and nursery environments where humidity and temperature must be tracked
- Cold storage and warehouse monitoring for temperature-sensitive goods
- Small commercial buildings needing multiple zone readings without cabling
- Rental properties where landlords need to verify climate conditions
Who It Is For
- Consumer electronics brands adding indoor-outdoor climate monitoring to an existing product line
- Distributors replacing a sensor that failed after a winter due to cold tolerance issues
- Agricultural suppliers bundling climate data with irrigation or ventilation systems
- Building services integrators who need a battery-powered sensor for retrofit installations
Problems It Solves
- Sensors that fail below -20 degrees C, leaving data gaps in winter
- Single-zone systems that cannot track both indoor and outdoor conditions
- Wired sensors that require trenching or drilling for installation
- RF links that drop out beyond 30 meters in open air
- Console systems that only support one sensor, limiting scalability
Technical Features
- Outdoor temperature sensing from -40 to +60 degrees C, indoor from 0 to 60 degrees C
- Humidity sensing from 10 to 99 percent RH across both indoor and outdoor zones
- Min and max outdoor temperature recording with automatic reset
- Alarm triggers when indoor or outdoor temperature or humidity exceed set limits
- Manual calibration for temperature and humidity readings
- 433MHz wireless transmission with 100 meter open area range
- 60 second transmission interval for timely updates
- Receiver supports up to eight outdoor sensors
- Free-standing or wall-mountable receiver design
- Low power consumption across both sensor and receiver
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 |
|---|---|
| Outdoor Temperature Range | -40 to +60 degrees C |
| Temperature Accuracy | plus or minus 1 degree C |
| Humidity Range | 10 to 99 percent RH |
| Humidity Accuracy | plus or minus 5 percent |
| Transmission Frequency | 433 MHz |
| Transmission Range | 100 meter open area, 330 feet |
| Transmission Interval | 60 seconds |
| Receiver Power | 4 x AAA 1.5V alkaline batteries |
| Outdoor Sensor Power | 2 x AAA 1.5V alkaline batteries |
| Receiver Dimensions | 152 x 84 x 25 mm |
| Sensor Dimensions | 45 x 110 x 21 mm |
| Package Contents | 1 base station, 1 transmitter |
Materials and Construction
- Moulded plastic housing for the outdoor sensor
- Weather sealed battery compartment sized for 2 x AAA cells
- Integrated antenna in the outdoor sensor housing
How It Is Made
Sensor sub-assemblies are populated and soldered on our own assembly line
Outdoor sensor housing is sealed and tested for waterproofing
Each unit undergoes a final ageing test before packing
Receiver and sensor are paired and tested before packaging
Quality Control
- Rainfall and waterproof testing on the assembled outdoor sensor
- Constant temperature and humidity chamber runs covering the -40 to +60 degrees C range
- Vibration testing to simulate transport and mounting stress
- Smog ageing to evaluate housing and seal durability
- Final ageing test on every unit before packing
Customisation Options
- Own-label printing and retail packaging
- Console pairing to a customer's existing UCTECH-protocol display
- Alternative battery configurations on request
- Manual and quick start guide in the destination language
Compared With the Alternatives
vs Wired thermo-hygrometers
No cable run required, but has a battery life limit and a 100m range ceiling
vs LoRa-based sensors
433MHz is simpler and lower cost; LoRa is better for long-range or multi-hop networks
vs Single-zone sensors
Supports up to eight sensors on one console, enabling multi-zone monitoring
Use Guide
- Place the outdoor sensor in a shaded, ventilated area away from direct sunlight and rain
- Mount the receiver on a wall or place it on a flat surface with clear line of sight to the sensor
- Set alarm thresholds in the console to match your environmental needs
- Replace batteries when the low power indicator appears
- Perform manual calibration if readings drift outside expected range
FT0303 Wireless Thermo-Hygrometer Questions
What is the real range between the sensor and the console
100 meters in open air. Through walls, foliage, or a roof, expect around 30 meters, which covers a typical house and garden.
How often does it update
Every 60 seconds, which balances data freshness with battery life.
Can I use lithium batteries instead of alkaline
Yes, lithium AAA cells can be used in both the sensor and receiver for longer life in cold conditions.
How many sensors can one console support
Up to eight sensors can be paired to a single console.
What is the lead time and minimum order
Tell us the quantity and target ship date and we will confirm both by email. Lead time depends on whether own-label printing and packaging are involved.
Which certifications does it carry
TBC. Ask us for the current certificate set for your destination market before you place the order.
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View Specifications →Request a Quote for the FT0303 Wireless Thermo-Hygrometer
Tell us the quantity, the destination market and whether you need own-label printing. We will confirm pricing, pairing and lead time in writing.