230V Color LCD Screen Non-programmable Wireless Room RF Smart Gas Boiler Thermostat for Floor Heating NTC
E3RF-L is a wireless RF room thermostat and receiver pair for gas boiler and floor heating systems where running a cable to the boiler is not practical. The transmitter sits in the room and the receiver wires at the appliance, communicating on 868.35 MHz over a range of up to 100 m. Frost protection cuts in at +7 C, and the receiver contact is rated 6(2)A at 230V.
Key Benefits
- No control cable between the room and the boiler, which saves chasing walls in a retrofit
- 868.35 MHz band is less congested than 2.4 GHz, so the link is not affected by WiFi traffic
- +7 C defrost temperature protects pipework when the system is switched off
- Colour LCD with white, blue or orange backlight options
- Non-programmable interface suits rentals and hotels where the schedule is set centrally
Problems It Solves
- Cable routes that would damage finished walls and floors
- Boiler positions too far from the living space for a wired stat
- Pipe freezing in rooms left off during cold weather
- Wireless links dropping out because of crowded 2.4 GHz bands
Who It Is For
- Heating installers doing boiler swaps in finished properties
- Underfloor heating suppliers packaging a wireless zone control
- Letting agents refitting controls between tenancies
- OEM buyers needing an RF pair with CE, ISO and RoHS documentation
Technical Features
- RF link on 868.35 MHz with a range of up to 100 m
- Non-programmable operation with HEAT / COOL / OFF frost protection
- Measuring range 5 C to 35 C in 0.5 C, setpoint range 10 C to 30 C in 0.5 C
- Display accuracy +/-1 C at 20 C
- Maximum load 6(2)A at 230V, defrosting temperature +7 C
- Receiver power supply 230VAC 50 Hz, 6W operating consumption
- Transmitter powered by 2 x AA 1.5V alkaline batteries
- Anti-flammable PC and ABS housing, CE ISO RoHS
Specifications
| Model | E3RF-L |
| Programmability | Non-programmable |
| Power Supply | 230VAC, 50HZ |
| Switchable Voltage | 24 V AC / DC,…250 V AC; 50 Hz |
| Switchable Current | 6 A (2 A inductive load) |
| Maximum Load | 6(2)A, 230V Defrosting Temperature +7°C |
| Temperature Range | 5°C-35°C in 0.5°C |
| Setpoint Range | 10°C-30°C in 0.5°C Power Consumption 6W Operating |
| Display accuracy | ±1°C (at 20°C) |
| Sensor | NTC |
| Screen | Digital LCD |
| Backlight | >> HEAT(Heating)/COOL(Cooling)/OFF(Frost Protection) >> Wall mounted >> |
| Material | Anti-flammable PC +ABS |
| Operating Frequency | 868.35MHZ |
| Transmission Distance | approx. 100m in open terrain |
| Consumption | 6W |
| Application | Apartment |
| Type | Floor Heating Parts/Floor Heating Thermostats |
| Feature | Save Energy |
| Certification | CE ISO RoHS |
| Warranty | 1 Year |
| After-sale Service | Online technical support, Return and Replacement |
| MOQ | 500pcs Package Carton Box |
Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.
Application Scenarios
- Solid wall properties where a cable run to the boiler would mean re-plastering
- Underfloor heating zones with the manifold in a remote plant cupboard
- Hotel rooms where the boiler or valve is outside the guest area
- Listed or finished buildings that cannot be re-wired
Quality Control
- Every transmitter and receiver pair is bound and range tested before packing
- Receiver contact load tested at 6(2)A 230V
- Frost protection cut-in verified at +7 C on batch samples
Customisation Options
- Backlight fixed to white, blue or orange for the buyer's range
- Receiver housing marking and front label to the buyer's artwork
- Setpoint range narrowed for hotel projects
- Carton box packing in 500 pcs export cartons or the buyer's specification
How It Compares
Installing And Commissioning
Step 1
Wire the receiver at the boiler on 230VAC 50 Hz and land the switched conductor on the 6(2)A contact
Step 2
Power the transmitter with 2 x AA alkaline batteries and confirm the pairing indicator
Step 3
Site the transmitter in the main living space, away from radiators and direct sun
Step 4
Walk the transmitter to the far side of the building and confirm the receiver still responds
Step 5
Set the target temperature and check the boiler fires within the switching differential
230V Color LCD Screen Non-programmable Wireless Room RF Smart Gas Boiler Thermostat for Floor Heating NTC: Buyer Questions
What is the wireless range of the E3RF-L?
Up to 100 m in open conditions. Internal walls, metal studwork and foil backed insulation reduce it, so we recommend a walk test before final fixing.
Which frequency does it use?
868.35 MHz, which avoids the congestion found on 2.4 GHz WiFi bands.
Does it protect the pipework when switched off?
Yes. The defrosting temperature is +7 C, so the receiver calls for heat before the system can freeze.
What load can the receiver switch?
6(2)A at 230V maximum.
How is it packed for export?
Carton box packing, with 500 pcs per master carton as standard. We can pack to your own specification.
What warranty and support do you provide?
1 year warranty with online technical support, return and replacement.
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Quote The 230V Color LCD Screen Non-programmable Wireless Room RF Smart Gas Boiler Thermostat for Floor Heating NTC
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