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