What is the difference between the smart sensor and the room sensor?

The smart and room sensors do not use WiFi. They use an RF connection with the thermostat. Company descriptions indicate a 65' range for the smart sendor vs. a 45' range for the room sensor. The company stated in a pro training session that the actual distance can be farther depending on material (walls, etc.) attenuating the sensor signal to the thermostat. I believe the company rep also stated the response of the smart sensor is much faster than the room sensor (something like 5 seconds vs. a minute or two.) And yes, the battery can last much longer (approximately 5 vs. 1 year)

Has anyone used both the old sensor (came with Ecobee 3) and this new one and noticed a difference? What is better during real world use?

I have both the room sensor and the smart sensor, 2 each. First the difference, room sensor cannot detect occupancy but smart sensor does, if you have follow me setup you’d have better results if you use just the smart sensor. Battery life is about the same given smart sensor uses the more expensive and higher capacity CR2477 VS CR2032 on the room sensor.

Does this model work with ecobee3 lite?

I also had issues updating the firmware on the 3 lite. Customer service was able to push and I was then able to pair without any problems. Working great now!

Do we need more sensors to place 1 in each bedroom or 1 is enough?

It depends. We have a 3 bedroom home but since it’s just me and my wife, mostly only one bedroom gets used. However, one of our adult children visits about once a month and uses one of the bedrooms a couple nights while he’s here. So, we have a sensor in that bedroom as well. But, that sensor only participates in “sleep” in the schedule, so it only pays attention to that sensor at night. If you use every bedroom in your house, you may want a sensor in each. Or, you may determine that generally speaking, whatever the temp is in your room, the other rooms may have the same temp, so you don’t need the extra sensor(s).

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Description

🌡️ Stay cool, save energy, and never miss a beat with ecobee SmartSensor!

EFFORTLESS SETUP - No wiring required—install in seconds with included adhesive and stands.
SEAMLESS INTEGRATION - Works flawlessly with all ecobee thermostats and Smart Security for a smarter home.
COMFORT WHERE IT COUNTS - SmartSensor targets the rooms you use most for personalized temperature control.
REMOTE CONTROL ALERTS - Manage your home’s comfort from anywhere via the ecobee app, with instant motion notifications.
ENERGY SAVING MOTION DETECTION - Automatically adjusts temperature based on occupancy to cut energy waste.

The ecobee SmartSensor 2 Pack enhances your smart thermostat by detecting occupancy in key rooms to optimize comfort and energy savings. Battery-powered with a 5-year lifespan, these wireless sensors install easily and integrate with ecobee’s ecosystem, including Smart Security, for real-time temperature adjustments and motion alerts—all controllable via the ecobee app.

Specifications

Manufacturer	ecobee
Part number	EB-RSHM2PK-01
Item Weight	168 g
Product Dimensions	20.32 x 12.7 x 5.08 cm; 168 g
Batteries	1 Lithium Metal batteries required. (included)
Item model number	SmartSensor
Size	No Size
Color	White
Style	Temperature Sensors
Material	Plastic
Pattern	Thermostat
Shape	Curved
Power source type	Battery Powered
Item Package Quantity	1
Number Of Pieces	2
Plug Profile	Wall Mount
Included components	2 Batteries, 2 Detatchable Stands, 2 SmartSensors, Adhesive, Install Guide
Batteries Included?	Yes
Batteries Required?	Yes
tech_spec_battery_description_toys	Lithium
Battery life	5 years

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