General Life ARUNA HT15S RF

ARUNA HT15S RF is a General Life wireless room thermostat. The room unit communicates with a separate RF receiver, which switches compatible equipment through its relay.

Model Identification

Manufacturer: General Life
Series: ARUNA
Model: HT15S RF
Category: Wireless room thermostat
Connection: Radio link to receiver; receiver relay to equipment

Room Thermostat Specifications

Dimensions (manufacturer order)85.7mm / 85.7mm / 30.1mm

Power supply3V DC (2 x AAA alkaline batteries)

Temperature measurement figure (manufacturer-reported)0.1°C

Operating sensitivity (manufacturer-reported)(-2.0°C) – (+2.0°C)

Setpoint range(5°C) – (30°C)

Battery life (manufacturer-reported)1 year (2 x AAA)

Ambient operating temperature(-10°C) – (+50°C)

Storage temperature(-20°C) – (+60°C)

Receiver Specifications

Power supply230V (AC)

Dimensions (manufacturer order)90mm / 90mm / 25mm

Relay NO switching current (resistive load)7A (240VAC – resistive load) 10A (120VAC – resistive load)

Ambient operating temperature(-10°C) – (+50°C)

Storage temperature(-20°C) – (+60°C)

Specification scope: These values apply to the RF configuration. The thermostat and receiver have different power supplies. The receiver’s mains supply must not be confused with the equipment’s thermostat input. Relay ratings are for resistive loads. The 0.1°C measurement figure is manufacturer-reported and does not establish an independent ±0.1°C accuracy claim.

Compatibility and Installation

Confirm that the heating or cooling equipment supports the receiver’s on/off relay connection, and follow the exact equipment and thermostat manuals. The RF link replaces the cable between room unit and receiver; the receiver still needs power and an equipment connection. Electrical installation should be performed by a qualified installer.

Wireless thermostats · ARUNA series · General Life manufacturer

Official Resources

Technical tables checked against the model-specific manufacturer product page on 11 October 2026. The model-family RF manual explicitly includes ARUNA and this model; its available technical data was also checked.

Official ARUNA HT15S RF Product Page
Official Model-Family RF User Manual
Official Wireless Catalog

AirAlign is an independent informational resource and is not affiliated with General Life.

ARUNA HT15S RF — receiver and heat source compatibility

Split unit design: The wireless thermostat housing is 85.7mm / 85.7mm / 30.1mm and operates from 3V DC (2 x AAA alkaline batteries), while the relay receiver measures 90mm / 90mm / 25mm and is supplied by 230V (AC). These supplies belong to separate components; plan mains electrical safety and the room-unit’s battery replacement individually.

Boiler switching: The receiver contact’s documented resistive-load capacity is 7A (240VAC – resistive load) 10A (120VAC – resistive load). Compare the boiler controller’s volt-free or powered input and contact wiring. This resistive limit alone does not demonstrate suitability for directly starting a motor or driving an inductive valve load.

Comfort and radio checks: The recorded setpoint span is (5°C) – (30°C); sensitivity is (-2.0°C) – (+2.0°C). The sensitivity parameter must not be described as sensor accuracy. Test pairing through the installed building structure, interference, loss-of-signal operation and safe receiver manual override.

Replacement decision: A visually similar wired or SMART ARUNA HT15S RF sibling may use completely different switching/power hardware. Confirm official model and receiver revision, radio instructions and the heating appliance interface before substitution.