230V Dial Button Wired Non-programmable Gas Boilers Room Thermostat for Heating
E3-H is a classically styled wired 230V room thermostat with a large dial and only two modes: HEAT and OFF with frost protection. It is aimed at house and underfloor heating installations where the specification is deliberately simple. Switching sensitivity is adjustable so the installer can slow the cycle rate on a heated floor, and a battery low indicator warns before control is lost.
Key Benefits
- Two modes only, which removes almost every source of user error
- Adjustable switching sensitivity tunes cycle rate to floor or radiator
- Battery low indicator gives warning before the room loses control
- Frost protection built into the OFF position at +7 C
- Classic dial styling that suits traditional interiors
Problems It Solves
- Occupants confused by multi-mode digital controls
- Underfloor slabs cycling too fast on a fixed differential
- Flat batteries taking out heating control without warning
- Digital styling that clashes with period interiors
Who It Is For
- Underfloor heating installers
- Homeowners and specifiers wanting a classic look
- Merchants stocking a simple wired 230V stat
- OEM buyers needing a dial fronted wired model
Technical Features
- Wired 230V operation, non-programmable, with a large dial button
- HEAT and OFF frost protection modes, defrosting temperature +7 C
- 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
- Adjustable switching sensitivity
- Switchable voltage 24 V AC/DC up to 250 V AC at 50 Hz, 6 A with 2 A inductive load
- Battery low indicator
- Anti-flammable PC and ABS housing in white, LCD display, CE ISO RoHS
Specifications
| Model | E3-H |
| Programmability | Non-programmable |
| Power Supply | 230V |
| Switchable Voltage | 24 V AC / DC,…250 V AC; 50 Hz |
| Switchable Current | 6 A (2 A inductive load) |
| Temperature Range | 5°C-35°C in 0.5°C |
| Setpoint Range | 10°C-30°C in 0.5°C Defrosting Temperature +7°C |
| Display accuracy | ±1°C (at 20°C) |
| Screen | LCD Display |
| Color | White |
| Material | Anti-flammable PC +ABS |
| Application | House Home Floor Underfloor Heating |
| Type | Floor Heating Parts |
| Function | Control Temperature |
| Certification | CE ISO RoHS |
| MOQ | 500pcs |
Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.
Application Scenarios
- Underfloor heating in houses and apartments
- Traditional homes where a modern digital face would look wrong
- Second homes needing frost cover between visits
- Simple single zone boiler control
Quality Control
- Dial travel and stop positions checked on every unit
- High voltage insulation test on the 230V section
- Battery low threshold verified on batch samples
Customisation Options
- Dial cap and housing colour
- Setpoint range narrowed for managed property
- Front label and logo to the buyer's artwork
- 500 pcs carton packing or the buyer's own specification
How It Compares
Installing And Commissioning
Step 1
Isolate the 230V supply and confirm the circuit is dead
Step 2
Mount the backplate on an internal wall clear of the heat emitter
Step 3
Land the switched conductors within the rated range
Step 4
Adjust switching sensitivity upward for underfloor heating
Step 5
Turn the dial to the target temperature and confirm the zone responds
230V Dial Button Wired Non-programmable Gas Boilers Room Thermostat for Heating: Buyer Questions
Does the E3-H have a cooling mode?
No. It offers HEAT and OFF with frost protection, which suits heating-only installations.
Can it control underfloor heating?
Yes. Switching sensitivity is adjustable, so the cycle rate can be slowed to match a heated slab.
What happens when the battery runs low?
A battery low indicator appears on the display before control is affected.
What certifications does it carry?
CE, ISO and RoHS.
How is it packed for export?
500 pcs per carton as standard, or to your own packing specification.
What is the setpoint range?
10 C to 30 C in 0.5 C steps, measuring from 5 C to 35 C.
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