230VAC DC Dial Adjustable Wireless Non-programmable Gas Boiler RF Thermostat for Heating
ST2403RF pairs a dial adjusted room unit with a 230VAC receiver, linked on 868.35 MHz with a range of up to 200 m. It is the wireless answer for hotels and indoor installations where guests should be able to change the temperature with one control and nothing else. Measuring runs 0 C to 40 C in 0.1 C steps, the setpoint covers 5 C to 35 C in 0.5 C steps, and the receiver switches 6(2)A at 230V.
Key Benefits
- Up to 200 m RF range covers large buildings and detached plant rooms
- Dial adjustment means guests do not need to read a manual
- No control cable, so rooms can be refitted without disturbing finishes
- 0.1 C measuring resolution behind a deliberately simple front panel
- 6W operating consumption at the receiver keeps standing losses low
Problems It Solves
- Guests unable to operate multi-button thermostats
- Cable routes blocked by finished walls or fire compartmentation
- Short RF range failing in large or multi-storey buildings
- Boiler relays needing an interposing relay because the stat contact is undersized
Who It Is For
- Hotel operators simplifying guest room controls
- Heating contractors on retrofit and refurbishment work
- Distributors serving the 230V wireless replacement market
- OEM buyers wanting a dial fronted RF pair
Technical Features
- RF link on 868.35 MHz with a range of up to 200 m
- Non-programmable, dial adjusted setpoint
- Measuring range 0 C to 40 C in 0.1 C, setpoint range 5 C to 35 C in 0.5 C
- Display accuracy +/-1 C at 20 C
- Maximum load 6(2)A at 230V
- Switchable voltage 24 V AC/DC up to 250 V AC at 50 Hz, 6 A with 2 A inductive load
- Receiver power supply 230VAC 50 Hz, 6W operating consumption
- ABS housing in white, RoHS and CE
Specifications
| Model | ST2403RF |
| 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 |
| Temperature Range | 0°C-40°C in 0.1°C |
| Setpoint Range | 5°C-35°C in 0.5°C Power Consumption 6W Operating |
| Display accuracy | ±1°C (at 20°C) |
| Screen | Digital LCD |
| Color | White |
| Material | ABS |
| Dimension | 120 x77 x28 mm |
| Operating Frequency | 868.35MHZ |
| Transmission Distance | approx. 200m in open terrain |
| Consumption | 6W |
| Application | Hotel/Indoor |
| Type | Air Conditioning/Heating/HVAC Systems/Radiator/Ventilation/Boiler |
| Function | Remote Control Thermostat |
| Feature | Energy Saving |
| Certification | RoHS CE |
| Warranty | 1 Year |
| After-sale Service | Online technical support |
Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.
Application Scenarios
- Hotel guest rooms with a boiler or valve in a service riser
- Apartments where the heat source sits in a communal plant room
- Refurbished houses with no accessible cable route
- Small offices needing local adjustment without a schedule
Quality Control
- Transmitter and receiver bound and range tested as a pair
- Dial travel and detent checked on every room unit
- High voltage insulation test on every 230VAC receiver
Customisation Options
- Dial cap colour and front label to the buyer's artwork
- Setpoint range restricted for hotel projects
- Receiver housing marking and instruction sheet language
- Graphic design support for packaging and manuals
How It Compares
Installing And Commissioning
Step 1
Wire the receiver on 230VAC 50 Hz at the boiler or valve and land the switched conductor
Step 2
Power up the room unit and confirm it has bound to the receiver
Step 3
Position the room unit at about 1.5 m, away from the heat emitter
Step 4
Walk test the link at the furthest point the room unit will be used
Step 5
Turn the dial and confirm the receiver LED and the appliance respond
230VAC DC Dial Adjustable Wireless Non-programmable Gas Boiler RF Thermostat for Heating: Buyer Questions
How far apart can the room unit and receiver be?
Up to 200 m in open conditions on the 868.35 MHz band. Always walk test in the actual building before final fixing.
Is there any schedule?
No. ST2403RF is non-programmable by design, which is what makes it suitable for guest rooms.
What is the receiver contact rating?
6(2)A at 230V maximum.
What is the housing material?
ABS, in white as standard.
Can you restrict the temperature range guests can select?
Yes. We can narrow the setpoint range at the factory for hotel and institutional orders.
What is the warranty?
1 year, with online technical support and a return and replacement process.
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