Lennox L40 Smart Thermostat

Lennox International

Lennox L40 Smart Thermostat is a compact, ENERGY STAR® certified device designed for single-stage HVAC systems, including gas, electric, heat pumps, and dual-fuel configurations. Its modern design features a 4-inch color touchscreen with a slim profile and glass-like finish, offering an intuitive user interface with large, legible fonts and organized screens. It supports single band Wi-Fi. -

Certifications & Resources

Device Name Model Certification Type Certification Date
Lennox L40 Smart Thermostat 27V51 Wi-Fi 2025-06-09
Wi-Fi Certification Details
Frequency Band2.4 GHz
Operating SystemLINUX
Wi-Fi HardwareSDIO


Documents - lennox – 27v51,27V51
[pdf] Specifications
Lennox Technical Publications ehb l40 2503 lennox dA aa03b57c4e |||
L40 Residential Control System Programmable Smart Wi-Fi Thermostat RESIDENTIAL PRODUCT SPECIFICATION ... i Thermostat / Page 15 SPECIFICATIONS NOTE - For use with residential equipment only. Order No. - 27V51 Temperature Setting Range Heating - 60 to 87F Cooling - 63 to 90F Wider setting configured...
lang:en score:28 filesize: 2.8 M page_count: 16 document date: 2025-03-21
[pdf] Specifications
Lennox Technical Publications L40 12 часов назад — Allows quick connection to the thermostat via Bluetooth for easier system configuration changes a Smartphone Equipment Configuration Profile ECP ehb l40 2503 lennox dA aa03b57c4e |||
L40 Residential Control System Programmable Smart Wi-Fi Thermostat RESIDENTIAL PRODUCT SPECIFICATION ... i Thermostat / Page 15 SPECIFICATIONS NOTE - For use with residential equipment only. Order No. - 27V51 Temperature Setting Range Heating - 60 to 87F Cooling - 63 to 90F Wider setting configured...
lang:en score:27 filesize: 2.99 M page_count: 16 document date: 2025-03-21

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