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serial RS485




Wi-Fi Thermostats

New 1 piece design



New All-in-One Design

Wi-Fi Enabled Thermostat iPhone Compatible

Compatible with Wi-Fi Networks Easy Set Up

Thermostat Control Program Software Included

Standard or Heat Pump HVAC Systems

128x64 Backlit Graphical Display

6 Buttons with On Screen Labels

Remote Control of  Thermostat Functions

Optional Remote Sensors 

Wall mount or mounts on single-gang junction box


The TW43 is a Wi-Fi enabled wireless digital thermostat, designed to control HVAC systems.  The TW43 contains a robust thermostat interface and is designed for use with networked systems where remote monitoring and/or remote control are desired. 


HVAC Systems Compatibility

Central HVAC systems or separate heating/cooling systems; can use separate RH/RC transformers (split)

Standard gas/electric HVAC Systems: 2-stage heating, 2-stage cooling

Heat Pump HVAC Systems: 3-stage heating, 2-stage cooling

Fan system: Selectable for gas or electric heat systems

Heat Pump Change Over valve (reversing valve): Selectable for change over with heat or change over with cool

Emergency Heat: In Heat pump mode, Emergency Heat mode is directly selectable from the thermostat

Compressor short cycle protection delay Adjustable

Automatic heating and cooling changeover

Fan Cycler feature

Ordering Info

Link to RCS Ordering Information

Serial Thermostat Users Manuals
TW43-Product Brief TW43 Product Brief
Remote Sensor Data Sheets
RTS3 Remote Temperature Sensor for TZ43
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