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GENERAL LIFE · ROOM THERMOSTAT

General Life ILLONA HT220S

ILLONA HT220S is a General Life room thermostat. This profile documents the wired version’s published technical data and keeps other manufacturer-listed configurations separate.

Model Identification

Manufacturer: General Life
Series: ILLONA
Model: HT220S
Category: Room thermostat

Key Specifications — ILLONA HT220S (Wired)

Dimensions (H/L/W)85mm / 125mm / 24mm
Power supply (manufacturer: Operating Current)3V DC (2 x AAA Alkaline Battery)
Relay NO Switching Current2A/30VDC (Resistive Load) 0.5A/125VAC (Resistive Load)
Temperature measurement accuracy (manufacturer-reported)0.1°C
Setpoint range (manufacturer: Operating Temperature Range)(5°C) – (30°C)
Battery Life1 Year (2 x AAA)
Ambient operating temperature(-10°C) – (+50°C)
Storage Temperature(-20°C) – (+60°C)
Specification scope: These values refer to the wired ILLONA HT220S only. RF and SMART versions have separate receiver, power and connectivity requirements. The manufacturer’s 0.1°C measurement figure is reproduced as reported; it is not an independently established ±0.1°C accuracy claim. Check the current manual and exact variant before installation.

Related Pages

ILLONA series · General Life

Official Resources

Source: General Life’s ILLONA HT220S shared wired user manual. Technical data checked on 11 October 2026.

Official ILLONA HT220S Wired Shared User Manual

AirAlign is an independent informational resource.

Application and replacement analysis — ILLONA HT220S

Room mounting: The stated 85mm / 125mm / 24mm form factor and 3V DC (2 x AAA Alkaline Battery) power supply define important ILLONA HT220S installation constraints. A wired thermostat can still use batteries; the boiler connection and thermostat’s own supply are distinct. Check mounting depth, wall finish and access for battery changes.

Electrical matching: Contact data 2A/30VDC (Resistive Load) 0.5A/125VAC (Resistive Load) describe a specified resistive load. Obtain the heat source’s control-input diagram to confirm open/close logic, voltage and isolation; motor or pump control cannot be inferred from a low-current thermostat contact rating.

Control settings: The recorded temperature setpoint window is (5°C) – (30°C), with manufacturer sensitivity see official exact-model manual. The operating sensitivity describes controller behavior, not necessarily room-temperature measurement uncertainty. Compare this with occupant preferences, heating inertia and switching frequency before commissioning.

Exact configuration: Do not migrate the ILLONA HT220S wired specifications to a similarly named wireless or smart variant; receiver mains supply, connectivity and switch circuitry require separate identification and current General Life technical documents.