Telephone Thermostat - Honeywell remote telephone thermostat system

Honeywell Modular Telephone System

Full System Kits:
Kits do not include the wire required to connect the system, wire must be purchased separately.TG511A Universal Thermostat Lock Box

Telephone Access Kit

The New Honeywell Telephone Thermostat provides telephone access to heating and cooling controls, providing reliable, precise temperature control and setting even when you're not home - (7-day programmable). NEW

Note: Installation by a trained service professional is highly recommended.

Click here for system diagrams!

Includes the three required modules:
- W8735B - Telephone Module
- W8635 - Equipment Interface
- T8635L - Programmable Thermostat
Introductory kit to allow telephone access to thermostat
Save $100 off normal price

Optional Modules:

W8703A Damper Interface Module

Up to three Damper Interfaces in one Telephone Access System for up to nine zones of control
Controls up to three external zone dampers
Interfaces with up to three T8635L thermostats for up to three zones of control
Synchronizes time between all three thermostats
Using one C7089B Outdoor Temperature Sensor, this module can display outdoor temperature on all three connected thermostats
Vacation hold activation in all zones
Note: Requires separate dampers to be installed in heating ducts

C7835A Discharge Air Temperature Sensor

Only one needed to add extended capability
Detects air supply that is out of the correct temperature range and automatically shuts off the HVAC system
Resumes system operation once temperatures return to acceptable ranges

Individual Modules

W8735B Telephone Access Module

Required system module, one required per system
Allows for dial-in control of the heating and cooling system
Capability for up to nine-zone control
(more than one zone requires one Damper Interface Module [W8703A] per three zones, one thermostat [T8635L] per zone)
Can call up to three numbers in event of error

W8635 Equipment Interface Module

Required system module, one required per system
Interfaces with nearly any existing HVAC equipment
Provides 24 Vac Control
Available for:
- 2 heat / 1 cool heat pump systems
- 2 heat / 2 cool non-heat pump systems

T8635L Communicating Programmable Thermostat

Required system module, at least one required per system (up to nine in a system, one per zone, with damper modules)
7-day programmable schedule
Back light provides easy night reading
Permanent memory prevents program loss during power outages
Compatible with the HT-C7089B external temperature sensor

Three Zone Telephone Access Kit

Includes the required modules, plus damper interface:

W8735B - Telephone Module
W8635 - Equipment Interface
T8635L - Three Programmable Thermostats
(one per zone)
W8703 - Damper Interface Module

Provides equipment for three zones

Note: Requires separate dampers to be installed in heating ducts