Lennox S40 Smart Thermostat

S40 is a larger 7-inch smart thermostat with accessory support for air quality and room sensing, plus Matter integration for major ecosystems.

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Lennox s40 smart thermostat product

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Information

MakerLennox
CategoryThermostat
Statusreleased
Product Pagehttps://www.lennoxsmartertogether.com/help/S40/pdp_s40.html

Versions in this family

2 certified versions share this design. Pick the one that matches what you want to buy.

107088 · this one 108296

The S40 steps up to a larger 7-inch HD display that shows time, weather, and simple graphics when idle, giving you more glanceable information. Beyond core thermostat controls, it plays well with Lennox accessories like PureAir S purification, smart remote room sensors, air quality monitors, and wireless extenders, so whole-home comfort and air quality can move together. With Matter support, it integrates cleanly into leading ecosystems for scenes, routines, and voice control.

Supported Matter Capabilities

Full feature details →

11 clusters across 4 categories · 7 features supported

Matter
1.3
Firmware
04.38.0087
Endpoints
1
Thread beta
—

Comfort & Climate

2 clusters
Thermostat
4 features
Heating Cooling Occupancy Auto Mode Schedule Configuration Setback Local Temperature Not Exposed
Thermostat User Interface Configuration
Supported

Security

1 cluster
Access Control
Supported

Automation & Scenes

4 clusters
Binding
Supported
Fixed Label
Supported
Groups
1 feature
Group Names
User Label
Supported

Other

4 clusters
GeneralDiagnostics
Supported
DataModelTest
LocalizationConfiguration
Supported
TimeFormatLocalization
Supported
CalendarFormat
WiFiNetworkDiagnostics
2 features
PacketCounts ErrorCounts
Management, networking, and diagnostic clusters are not shown in this summary.

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Specifications

Manufacturer Part Number107088
LabelLennox S40 Smart Thermostat
Certification IDCSA25B3DMAT47759-24
Latest Firmware Version04.38.0087
Matter Version1.3
Network Matter over Wi-Fi
Software Versions

  1. 04.38.0087 Latest ✓

    Certificate: CSA25B3DMAT47759-24

  2. 04.38.0081 ✓

    Certificate: CSA2592BMAT47229-24
Firmware Version
Hardware Version A
Compliance Document
Matter Specification Version 1.3
Transport Interface
Primary Device Type ID
Firmware Version
Compliance Document
product.meta.csa_product_type End Product
MPN 22V24