Moreover, the Preste doesn't use Wi-Fi to connect to the Internet like the Nest does; instead, it requires an optional Red LINK Gateway bridge ($75 street), which uses a router port to connect the system to the Internet.

EFS-03 - VisionPRO® IAQ

Developed specifiy for the HVAC industry, the Red LINK wireless protocol operates at 900MHz and employs frequency-hopping technology to communicate with the thermostat and the various sensors.

Preste® <em>IAQ</em> with Equipment Interface Module - <em>Honeywell</em>.

Preste® IAQ with Equipment Interface Module - Honeywell.

Earlier this year Honeywell rolled out its Preste IAQ Kit R5101WW ($330 street), a home environmental control solution that features a wireless color touch-screen thermostat with 7-day programming capabilities and the ability to manage your heating, cooling, ventilation, and humidity control devices from just about anywhere.

Honeywell Thermostat Wiring Instructions DIY House Help

But whereas the Nest is very easy to install, the Preste is meant to be installed by an HVAC professional.

Honeywell iaq thermostat installation manual:

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