How does the auto changeover work? can i set it to keep the temp between 65 and 74 degrees and it turns a/c and heat on as necessary?

Yes I wasn't sure how it would work. I have my account set to 78. AC came on when it go too hot. Hope this helps.

Hi. My old thermostat has the red wire connect to RH which then jumps to RC. With the Sensi lite, do I just attached the red wire to R? Thank you.

Sensi claims there is an internal jumper which means you only have to connect the red wire which now goes to RH. However, I had to pigtail the red wire and connect to both RH and RC

Will this thermostat work on a split unit meaning natural gas heat

It works on my natural gas central unit (if you need emergency heat then no this touch lite will not work for you)

Does this have a child lock?

Yes, it’s called Lock Thermostat Display. It’s located in the system settings.

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🔥 Stay smart, save energy, and keep your comfort in your control!

PROACTIVE HVAC CARE - Receive usage reports and maintenance alerts to keep your system running efficiently.
EFFORTLESS DIY SETUP - Built-in level and step-by-step guide make installation a breeze—no electrician needed.
PRIVACY FIRST DESIGN - Your data stays yours—no selling or ad targeting, guaranteed.
SMART ENERGY SAVINGS - Cut your HVAC energy bills by up to 23% with flexible scheduling and geofencing.
CONTROL FROM ANYWHERE - Top-rated app lets you adjust your home’s temperature on the go, anytime, anywhere.

The Emerson Sensi Lite Smart Thermostat (ST25) offers easy DIY installation without a common wire on most systems, Energy Star-certified savings of up to 23%, and secure, privacy-focused smart control via a top-rated mobile app compatible with Alexa. It delivers real-time HVAC performance monitoring and maintenance alerts, empowering you to optimize comfort and efficiency effortlessly.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Brand	Emerson
Model Number	ST25
Color	Black
Product Dimensions	2.24 x 12.88 x 7.95 cm; 136.08 g
Voltage	24 Volts
Special Features	Auto Changeover, Daylight Savings Time Ready, Filter Indicator, Low Voltage, Programmable
Item Weight	136 g

Emerson Thermostats Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App,Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not Required on Most Systems, Black

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