Core Eclipse Thermostatic Push Button — What is it?

The Core Eclipse Thermostatic Push Button is an ultra-thin, KNX-certified wall switch that combines a physical push button interface with five built-in environmental sensors — temperature, humidity, CO₂, proximity, and ambient light — into a single 11mm-thick device. Unlike a standard smart switch, it simultaneously controls lighting, climate, blinds, and audio while monitoring your room’s air quality and temperature in real time, feeding live data directly into your KNX smart home system.

Why a Switch Should Do More Than Switch

In traditional Indian homes, a switch does exactly one thing — it turns a circuit on or off. Even most modern smart switches available in India today follow the same principle. They may be Wi-Fi connected, they may have a touch interface, but their fundamental job remains singular: control one function.

The Core Eclipse Thermostatic Push Button redefines what a wall switch is.

When you walk into a room where a Core Eclipse Thermostatic Push Button is installed, three things happen before you touch it. The proximity sensor detects your approach. The ambient light sensor reads the room’s brightness. The display backlight activates at the correct intensity. By the time your finger reaches the button, the device has already assessed your environment.

This is the philosophy behind Core Smart Home’s product design — “Designed for Exclusive Living Spaces” — where every surface-mounted device contributes intelligence to the room it inhabits, not just control.

In premium residential projects across Noida, Delhi NCR, and Gurgaon, where homeowners invest significantly in interior finishes and expect their technology to match that investment, the Core Eclipse Thermostatic Push Button represents the convergence of luxury craftsmanship and engineering precision.

What Exactly is the Core Eclipse Thermostatic Push Button?

Model: CR-ECS-86-KNX-THPB

The Eclipse Thermostatic Push Button is a wall-mounted KNX device that fits into a standard 86mm × 86mm installation box — the same footprint as a conventional Indian modular switch plate. At only 11mm in wall thickness, it sits nearly flush with the surface, creating a seamless, architectural appearance rather than the protruding look of traditional switches.

The device serves four simultaneous roles:

1. KNX Push Button Controller — Physical buttons that send commands to lighting, blinds, scenes, and audio across your entire KNX installation.

2. Room Thermostat — Built-in temperature and humidity sensors feed real-time data to the KNX thermostat logic, controlling your HVAC system without requiring a separate thermostat unit.

3. Environmental Monitor — CO₂ sensor continuously measures air quality, triggering ventilation automation when CO₂ exceeds set thresholds.

4. Adaptive Interface — Proximity and brightness sensors automatically adjust display backlighting based on ambient conditions and user presence.

Core Eclipse Thermostatic Push Button — Complete Specifications

SpecificationDetailModelCR-ECS-86-KNX-THPBDimensions86mm × 86.9mm × 11mmProtocolKNX TP (Twisted Pair)Button Configuration1, 2, or 4 rocker optionsDisplayCustomizable RGB backlit iconsTemperature SensorBuilt-in — feeds KNX thermostatHumidity SensorBuilt-in — percentage readingCO₂ SensorBuilt-in — air quality monitoringProximity SensorDetects user approach — activates backlightSpecificationDetailBrightness SensorAuto-adjusts LED backlight intensityMaterialsStainless steel, brass, anodized aluminumFinishes10 premium finish optionsOperating Temperature-5°C to +45°CInstallation HeightMinimum 1.5m from floorKNX Power21–30V DC via KNX busConfiguration ToolETS (Engineering Tool Software)

The 5 Built-in Sensors — What Each One Does

This is what separates the Core Eclipse Thermostatic Push Button from every other wall switch available in India. Five independent sensors are embedded within the 11mm profile, each contributing a specific intelligence layer to your smart home system.

Sensor 1 — Temperature Sensor

The temperature sensor continuously reads the ambient air temperature in the room and transmits the data over the KNX bus to the thermostat actuator and HVAC gateway. This eliminates the need for a separate wall-mounted thermostat — the Eclipse Push Button handles both control and sensing simultaneously.

What this means for Indian homes: In a typical Indian 3BHK apartment with four split ACs and a separate thermostat per room, the Core Eclipse replaces both the switch and the thermostat with a single device — reducing hardware, reducing installation complexity, and dramatically cleaning up the wall surface.

Sensor 2 — Humidity Sensor

The humidity sensor measures the relative humidity percentage in the room. In Indian conditions — where monsoon months bring humidity levels exceeding 80–90% in many cities — humidity monitoring is particularly relevant.

The KNX system can use humidity readings to trigger dehumidifier operation, adjust AC fan speed, or send alerts when humidity reaches uncomfortable or damaging levels for sensitive equipment like home theatre systems and musical instruments.

Sensor 3 — CO₂ Sensor

This is the most technically sophisticated sensor in the device. The CO₂ sensor measures carbon dioxide concentration in parts per million (ppm) — the primary indicator of air quality and ventilation adequacy.

Normal outdoor CO₂: 400–450 ppm

Comfortable indoor range: 400–800 ppm

Noticeable stuffiness: 800–1,200 ppm

Poor air quality — ventilation required: 1,200+ ppm

When CO₂ exceeds the configured threshold, the KNX system automatically triggers ventilation — opening motorized windows, activating fresh air fans, or adjusting the HVAC system to maximum fresh air intake. This happens without any manual intervention.

Why this matters in Indian homes: Indian cooking generates significant CO₂ and particulate matter. Closed, air-conditioned rooms in Indian apartments — particularly during evenings when families gather — frequently reach poor air quality levels without occupants realizing it. The Core Eclipse Thermostatic Push Button makes invisible air quality visible and actionable.

Sensor 4 — Proximity Sensor

The proximity sensor detects when a person approaches the device and activates the backlit display automatically. In dark environments — a bedroom at night, a home theatre room — the device remains completely dark until you approach, then illuminates precisely at the moment you need it.

This eliminates the frustrating experience of fumbling for a switch in a dark room. The device detects your approach and lights up before your hand arrives.

Sensor 5 — Brightness Sensor

The ambient light sensor continuously reads the room’s lux level and automatically adjusts the button LED brightness to match. In a brightly lit living room, the LEDs glow at higher intensity for clear visibility. In a dimly lit bedroom, they reduce to a soft, non-intrusive glow.

This also feeds data into the KNX system for daylight-linked lighting automation — reducing artificial lighting when sufficient natural light is present, delivering measurable energy savings over time.

Control Functions — What You Can Operate From One Device

FunctionCapabilitySwitchingOn/Off for any KNX circuitDimming0–100% continuous dimmingRGB ControlFull color control for RGBW fixturesTunable WhiteColor temperature adjustmentThermostatHeating + Cooling with PI ControlAC ControlDirect HVAC control via KNX gatewayBlinds/JalousieUp/Down/Stop + slat angle controlScene ActivationTrigger multi-device scenesAudio ControlVolume and zone managementAir Quality DisplayLive CO₂ reading on backlit display

The Thermostat Function — Replacing Your AC Remote Forever

One of the most compelling features for Indian homeowners is the built-in thermostat logic. The Eclipse Thermostatic Push Button can directly replace your split AC remote control when connected through the Core AC Gateway.

How the Thermostat Works

Step 1 — Temperature sensor reads current room temperature (example: 28°C)

Step 2 — User sets desired setpoint temperature via KNX (example: 24°C)

Step 3 — PI (Proportional-Integral) control algorithm calculates the required cooling output

Step 4 — Command is sent via KNX bus to the AC Gateway, which controls the indoor unit

Step 5 — When room reaches 24°C, system modulates to maintain — no manual adjustment needed

Advanced Thermostat Features

Window Contact Integration — If a window sensor detects an open window, the thermostat automatically pauses to prevent cooling an open space — saving significant electricity.

Operating Modes — Comfort, Standby, Economy, and Protection modes with independent temperature setpoints for each.

Schedule Programming — Set different temperatures for morning, afternoon, evening, and night without touching the device — all programmed once via ETS.

Dual Zone Control — The Thermostatic Push Button supports independent thermostat logic for two separate zones from a single device.

Design — 10 Premium Finishes for Indian Interiors

The Core Eclipse Thermostatic Push Button is available in 10 premium material and finish combinations, each produced through artisanal manufacturing processes:

MaterialFinish OptionsBrassSatin brushed, Aged/OxidizedStainless SteelBrushed satinAluminumAnodized — multiple colorsAluminumMulti-layer painted — silky texture

Why this matters for Indian homes: Indian luxury interiors in 2026 are heavily influenced by material authenticity — real marble, solid wood, genuine metal hardware. A smart switch in brushed brass or aged metal complements these interiors in a way that plastic-finish smart switches fundamentally cannot. The Core Eclipse sits at the intersection of precision engineering and material luxury — making the technology disappear into the design.

Core Eclipse Thermostatic Push Button vs Standard Smart Switches

FeatureCore Eclipse ThermostaticStandard Wi-Fi Smart SwitchProtocolKNX — industrial standardNot availableTemperature sensorBuilt-inNot availableHumidity sensorBuilt-inNot availableCO₂ sensorBuilt-inNot availableProximity sensorBuilt-inNot availableBrightness sensorBuilt-inNot availableThermostat functionFull PI controlNot availableInternet dependencyWorks without internetRequires internetMaterialBrass / Steel / AluminumPlasticWall thickness11mm — ultra slim25–40mm typicalFinish options10 premium finishes2–3 standard colorsLifespan20+ years3–7 years

Installation — What Indian Homeowners Need to Know

The Core Eclipse Thermostatic Push Button installs into a standard 86mm × 86mm recessed box — compatible with the Indian modular switch installation standard. The KNX bus cable (24V DC twisted pair) connects at the back of the device.

Installation Rules

Minimum height: 1.5 metres from floor — ensures accurate temperature reading away from floor-level drafts.

Minimum distance from doors: 0.3 metres — prevents door movement from triggering the proximity sensor falsely.

Avoid heat sources: Do not install near radiators, direct sunlight exposure, or heat-generating appliances — affects temperature sensor accuracy.

Internal wall preferred: External walls have temperature variations that affect sensor readings. Internal walls provide the most accurate ambient temperature measurement.

Configuration

Like all Core KNX devices, the Eclipse Thermostatic Push Button is programmed using ETS (Engineering Tool Software) — the KNX Association’s certified programming environment. All button functions, sensor thresholds, thermostat setpoints, and LED behaviors are configured in ETS and loaded onto the device over the KNX bus.

Our lighting control and automation team at Brightmatic handles all Core KNX programming and commissioning for residential and commercial projects across Noida and Delhi NCR.

• In a recent project at a premium 5BHK villa in Sector 128, Noida — we replaced 68 individual switches and 8 separate AC remote controls with 12 Core Eclipse Thermostatic Push Buttons and 2 Eclipse Home Controller panels. The client’s primary feedback after installation: “The walls look clean for the first time. I didn’t realize how much the switches were affecting the interior design.”

Where to Use Core Eclipse Thermostatic Push Button in Your Home

RoomPrimary Functions UsedMaster BedroomThermostat + Lighting dimming + Blind control + SceneLiving RoomScene activation + Dimming + AC control + CO₂ monitoringKitchenCO₂ monitoring (cooking) + Switching + Ventilation triggerHome OfficeCO₂ monitoring + Thermostat + Lighting (productivity scenes)Children’s RoomTemperature monitoring + Simplified switchingGuest RoomFull thermostat + Lighting + Blind controlHome TheatreScene activation + Dimming + AC control

Originally Published at: 

https://www.brightmatic.in/insights/core-eclipse-thermostatic-push-button-what-is-it