Rointe Onyx 500W Wi-Fi High Heat Retention Storage Heater | SHOXI102

Smart 500W HHR Storage Heater with 1020W Input, Wi-Fi Direct & Rointe NEXA App Control

The Rointe Onyx 500W Wi-Fi High Heat Retention Storage Heater | SHOXI102 is an intelligent electric storage heater designed to combine high heat retention, smart dynamic charging and advanced connected controls for efficient home heating.

With a 1020W charging input and 500W heat output, the SHOXI102 uses four high-heat-retention magnetite energy cell packs to store thermal energy and release it progressively when required. Its intelligent charge control calculates the amount of energy needed rather than simply charging the heater to maximum capacity, helping reduce unnecessary energy consumption.

Built-in Wi-Fi Direct means the Onyx connects directly to your router without requiring an additional gateway or Wi-Fi hub. Once connected to the Rointe NEXA app, users can remotely manage heating, programming and energy-saving functions from a compatible smartphone.

Features

• 500W High Heat Retention Storage Heater
• 1020W Charging Input
• 4 High Heat Retention Energy Cell Packs
• Smart Dynamic Charge Control
• Magnetite Energy Storage Core
• Special Mg-Fe Alloy Thermal Cells
• HHR / High Heat Retention Compliant
• SAP High Heat Retention Storage Heater
• Built-In Wi-Fi Direct
• No Additional Wi-Fi Gateway Required
• Bluetooth Low Energy for Pairing
• Rointe NEXA App Control
• AI Heating System
• Inverter Smart Adaptive Technology
• True Real Power Energy Meter
• Amazon Alexa & Google Assistant Voice Control
• 24/7 Smart Programming
• Open Window Detection
• Early / Adaptive Start
• Limited Mode
• Night Mode
• Holiday / Vacation Mode
• Panel & Remote Lock
• Consumption Efficiency Indicator
• 1.77" Full-Colour Display
• Touch Controls with Audio Feedback
• IPX4 Rated
• Suitable for Areas up to 5m²
• Standard & Tall Installation Feet / Brackets Included
• White RAL 9016 Finish
• Made in Spain

High Heat Retention Storage Technology

The Rointe Onyx has been developed specifically as a High Heat Retention storage heater, using a dense thermal core to retain energy and release heat progressively.

Inside the SHOXI102 are four magnetite energy cell packs incorporating Mg-Fe alloy technology. These thermal cells provide high inertia and heat-storage capability, allowing energy accumulated during the charging period to be used later when heating is required.

The SHOXI102 is rated at 1020W input with a 500W output and is designed to heat an area of up to approximately 5m², subject to factors such as insulation levels, room layout and heat loss.

Smart Dynamic Charge Control

Rather than simply storing the maximum possible amount of heat every day, the Onyx incorporates automatic intelligent charge control.

The system calculates the amount of stored energy required to satisfy the programmed heating demand, helping prevent unnecessary charging and wasted energy.

This makes the Onyx particularly suited to modern storage-heating installations where greater control over when energy is stored and when heat is delivered is required.

Wi-Fi Direct – No Separate Gateway Required

The Rointe SHOXI102 features an integrated Wi-Fi Direct module, allowing the heater to connect directly to a compatible home router.

This removes the requirement for an additional Wi-Fi gateway or hub and allows connected control through the Rointe NEXA app.

Bluetooth Low Energy is also incorporated for pairing, providing a streamlined setup process for connected heating control.

Rointe NEXA Smart App Control

Once connected, the Rointe NEXA app provides remote control of compatible Onyx heating functions from a smartphone.

The connected system supports features including 24/7 programming, remote locking, holiday settings, energy monitoring and intelligent heating management.

The Onyx can also integrate with other compatible Rointe connected radiators, towel rails, water heaters and thermostats, helping create a more unified Rointe electric heating system.

AI Heating System

Rointe's AI Heating System adds an intelligent software layer to its connected heating ecosystem.

The system is designed to analyse the heating installation, usage habits and comfort requirements before providing personalised recommendations through the Rointe NEXA app. The objective is to help optimise heating schedules, comfort and energy consumption without requiring continual manual adjustment.

Inverter Smart Adaptive Technology

The Onyx incorporates Inverter Smart Adaptive Technology, designed to manage heating output more efficiently as the room approaches its required temperature.

According to the supplied Rointe product information, the technology can reduce stabilisation power by up to 80%, helping avoid unnecessary energy use while maintaining the desired comfort level.

True Real Power Energy Monitoring

An integrated True Real Power consumption meter records energy-use information and makes this data available through the Rointe NEXA app.

This gives users greater visibility over how their electric heating is operating and can help identify opportunities to adjust schedules and temperature settings to improve efficiency.

Alexa & Google Assistant Voice Control

For additional convenience, the connected Onyx can be controlled using compatible Amazon Alexa and Google Assistant voice-control systems through the Rointe NEXA ecosystem.

This complements the heater's onboard touch controls and smartphone app, giving users several ways to manage their heating.

24/7 Smart Programming

The Rointe Onyx supports comprehensive 24-hour, 7-day programming, allowing operation to be adapted around everyday routines.

Available timer options include a user-programmable seven-day timer together with Out All Day and Home All Day modes.

Additional functionality includes editable preset programmes, countdown operation, Boost Mode, Advanced Mode and heat-demand percentage adjustment.

Open Window Detection

The Open Window energy-saving function monitors for a sudden reduction in room temperature.

When the heater detects a fall of at least 4°C within 30 minutes, it can activate its 7°C anti-frost mode, helping prevent unnecessary heating while a window or door is left open.

Early Start

When operating in AUTO mode, the Early Start / Adaptive Start function calculates when heating should begin so that the programmed temperature can be achieved at the requested time.

The heater can anticipate the scheduled heating period by up to two hours, reducing the need to manually programme unnecessarily long pre-heating periods.

Limited Mode & Control Lock

Limited Mode allows the available temperature range to be restricted and access to the heater's menu to be blocked.

This is particularly useful in rental accommodation, hotels, holiday lets and homes with children, where preventing excessive temperature adjustment or unauthorised changes can help maintain more predictable energy consumption.

The control panel can also be locked locally or remotely through the app.

Night & Vacation Modes

Night Mode is designed to reduce unnecessary overnight consumption while maintaining comfort. The supplied product information states that it can progressively reduce the temperature by up to 1.5°C over a maximum three-hour period while turning off the product display.

Vacation / Holiday Mode allows a period of absence to be scheduled through the app, automatically switching the heater off for the specified period and restoring operation when the scheduled absence ends.

Colour Display & Touch Controls

A 1.77-inch full-colour display provides clear access to the heater's operating information and settings.

The touch-sensitive control panel includes audio feedback, while the display backlight can be edited according to user preference.

A traffic-light-style consumption indicator also uses green, yellow and red to provide a visual indication of efficiency based on the selected temperature and average energy consumption.

Accurate Electronic Thermostat

The Onyx uses a digital electronic thermostat accurate to approximately ±0.2°C, providing precise temperature management.

The selectable setpoint range extends from 7°C to 30°C, while Frost Protect provides continuous low-temperature protection where required.

High-Quality Integrated Fan

Heat delivery is assisted by a high-quality integrated fan fitted with corrosion-free ceramic bearings.

This allows the stored thermal energy to be distributed when heating demand requires it rather than relying solely on uncontrolled heat release from the storage core.

IPX4 Rated

With an IPX4 rating, the Rointe Onyx enclosure provides protection against splashing water in accordance with its rating.

Installation location, electrical supply and applicable bathroom zones must always comply with current electrical regulations and Rointe's installation instructions.

Safety & Compliance

The SHOXI102 incorporates both electronic and additional electromechanical overheat protection for added operational safety.

The supplied technical information lists UKCA, CE and BEAB approvals, together with Lot20 compliance and recognition as a SAP High Heat Retention Storage Heater.

• Brand: Rointe
• Range: Onyx
• Model / Product Code: SHOXI102
• Product Type: Wi-Fi High Heat Retention Storage Heater
• Heat Output: 500W
• Charging Input: 1020W
• Recommended Heating Area: Up to 5m²
• Energy Cell Packs: 4
• Storage Core: High Heat Retention Magnetite Energy Cells
• Thermal Cell Technology: Mg-Fe Alloy
• HHR Compliant: Yes
• SAP High Heat Retention: Yes
• Supply Voltage: 220–240V AC
• Frequency: 50Hz
• Electrical Class: Class I
• Supply Options: Twin Supply or Single Supply
• Wi-Fi: Wi-Fi Direct
• Additional Gateway Required: No
• Bluetooth: Bluetooth Low Energy
• App Control: Rointe NEXA
• Voice Control: Amazon Alexa & Google Assistant via Rointe NEXA
• Thermostat: Digital Electronic
• Thermostat Accuracy: ±0.2°C
• Temperature Setpoint Range: 7°C–30°C
• Programming: 24/7
• Display: 1.77" Full-Colour Display
• Control: Touch Panel with Audio Feedback
• Open Window Detection: Yes
• Early / Adaptive Start: Yes
• Limited Mode: Yes
• Night Mode: Yes
• Vacation / Holiday Mode: Yes
• Panel Lock: Yes
• Remote Lock: Yes
• Boost Mode: Yes
• Automatic Charge Control: Yes
• Consumption Monitoring: True Real Power Meter
• IP Rating: IPX4
• Colour: Traffic White
• Body Finish: RAL 9016 White
• Grille Finish: RAL 7035 Anodised
• Height: 740mm
• Width: 580mm
• Depth: 190mm
• Dimensions: 740 x 580 x 190mm (H x W x D)
• Full Weight: 67kg
• Cable Length: 1.4m
• Battery Backup: Lifetime Rechargeable Supercapacitor
• Time & Date Backup: Up to 7 Days
• Overheat Protection: Electronic & Electromechanical
• Compliance / Approvals: UKCA, CE, BEAB, Lot20 & SAP HHR
• Manufactured In: Spain
• Manufacturer: Rointe Heating
• Included Installation Accessories: Standard & Tall Feet / Brackets
• Electronics Warranty: 3 Years
• Body Warranty: 10 Years

Suitable Applications

• Domestic High Heat Retention Heating
• Living Areas up to Approximately 5m²
• Bedrooms
• Home Offices
• Apartments & Flats
• New-Build Properties
• Electric-Only Properties
• Storage Heater Replacement Projects
• Energy-Efficient Heating Upgrades
• Smart Home Heating Systems
• Rental Properties
• Holiday Accommodation
• Hotels & Guest Accommodation
• Properties Using Off-Peak Electricity Tariffs
• Connected Rointe Heating Installations

Correct heater sizing should always be based on the calculated heat loss of the room rather than floor area alone.

Why Choose the Rointe Onyx SHOXI102?

The Rointe Onyx SHOXI102 takes the traditional concept of an electric storage heater and combines it with significantly more sophisticated control technology.

Its four-cell high-heat-retention magnetite core, 1020W charging input and 500W output are combined with intelligent dynamic charging to store the amount of energy required for the programmed heating demand.

Built-in Wi-Fi Direct eliminates the need to purchase a separate gateway, while the Rointe NEXA app, AI Heating, True Real Power monitoring, 24/7 programming and Alexa/Google Assistant compatibility provide extensive connected control.

Energy-saving functions including Open Window Detection, Early Start, Limited Mode, Night Mode and Vacation Mode further help users manage heating around their actual lifestyle and occupancy.

For installations requiring a modern, connected SAP High Heat Retention storage heater, the compact SHOXI102 provides a comprehensive combination of heat storage, intelligent controls and smart-home connectivity.

What are Heavy Goods?

Carriage is shown at the checkout stage and is charged at the cost price of a pallet based on a 48-hour delivery service to most locations; more remote locations can be longer because of the logistics involved. All storage heaters, except mini-bathroom storage heaters, are over the standard carriage weight of 30 kg. Carriage is calculated based on your postcode and the number of pallets that will be necessary to dispatch your order (e.g. the cost of delivering 4 storage heaters could well be the same cost as delivering 1 storage heater if it is possible to get 4 heaters of the size ordered onto one pallet). We work on a maximum weight of 500 kg per pallet, which will be delivered by lorry. It is your responsibility to unload the pallet.