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T1119RF

MODEL

©Venstar Inc. 06/08 - Patent Pending          

P/N 88-791     Rev. 1

ADD-A-WIRELESS 

THERMOSTAT

Please locate the following products contained in this box:
      

To set the House Code on the RF Module, add all of the switches that are in the 
ON position.  The numbers of each switch are printed on the plastic next to the 
opening  for  the  switches.    This  total  equals  the  House  Code  number.    Please 
disregard the numbers on the switch itself.

The RF Module and the T1100RF that are contained in the T1119RF package arrive 
from the factory preset to House Code zero.  For this reason, it is not necessary to 
change  the  house  codes  of  the  T1100RF  and  RF  Module  for  proper  operation.   
However,  if  interference  is  encountered,  the  house  codes  may  be  changed  as 
instructed  below.    For  more  information  regarding  the  T1100RF,  please  consult 
the T1100RF Owner’s Manual.

1
2
4
8
16
32

Example A

House
Code = 9
(1+8 = 9)

Example B

House
Code = 4

1

1

1
2
4
8
16
32

O

N

1

   

4

   

5

 
6

  

8

7

  

2

  

3

 

1

1

1
2
4
8
16
32

O

N

1

   

4

   

5

 
6

  

8

7

  

2

  

3

 

ON

OFF

H

O

U

SE

 C

O

D

E

O

N

1

   

4

   

5

 
6

  

8

7

  

2

  

3

 

AUTO

I2:00

Su

Pm

H

EAT

C

OOL

72

74

After the dip switches have been set, plug the RF Module 
into the base of the thermostat.

Congratulations  on  your  purchase  of  the  Add-A-Wireless  Thermostat  accessory.    This 
accessory will allow you to control your T1800 or T1900 thermostat from any location in 
your home using the handheld T1100RF Wireless Thermostat.*  

Using the easy four-step installation instructions below, install your new T1100RF Thermo-
stat and start enjoying the benefits of Venstar’s patented wireless technology today!

Operation is simple!  When a button is pressed on the T1100RF it will take complete control 
of the thermostat.  From the T1100RF you can change the mode of your thermostat, turn 
the fan on, and even energize your heating or cooling system.  To transfer control back to 
the T1800 or T1900 thermostat, press any button on that thermostat’s keypad (except for 
the Outside button).

*Not all T1800 & T1900 thermostats are compatible.  Consult Venstar for a complete listing.

T1100RF Wireless 

Thermostat

FAN

MODE

HEAT

COOL

AUTO

o

o

Am

Su

  8:21

72

72

70

FanOn

A

A

 L

it

h

iu

m

  

 B

a

tt

e

ry

A

A

 L

it

h

iu

m

   

B

a

tt

e

ry

AA Lithium 

Batteries

Screws and 

Wall Anchors

RF Module

      Venstar Inc. 08/07

Use  with  most  Air  Conditioning  &  Heating  Systems  including:  1  or  2  Stage 
Electric Cooling & 2 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat. 

Thermostat

Thermostat

residential

T1100RF

PROGRAMMABLE

7-DAY

PROGRAMMABLE

7-DAY

up to 

& 2-cool

up to 

& 2-cool

2-heat

2-heat

WIRELESS

THERMOSTAT

OWNER’S

MANUAL

OWNER’S 

MANUAL

Digital 

Digital 

HEAT

COOL

HEAT

PUMP

Control up to 2 Heat & 2 Cool Stages

Full Range of Compatibility for Use on

Gas/Electric, HP, Electri and Hydronic Heat

7-Day Programmable

4 Settings/Day

Auto Changeover

5 minute Built-In Compressor Protection

Self-Prompting Programming w/ Copy

Full Electronic

Display Either F or C

Back-Lit Display

Keypad Lockout

Large Easy-to-Read Display

Programmable Fan

Dual Setpoint w/ Adjustable Deadband

‘O’ or ‘B’ Terminal

Optional Power Supply (ACC0800)
Non-Volatile Memory

Wireless: Transmits up to 500 feet,

through walls and floors - 418 MHZ

will not interfere with other systems

Receiver capable of listening to up

to 4 thermostats

Thermostat capable of transmitting 

to multiple receivers
No wires to run

Ideal for century old homes

Ideal for keeping the baby’s room

the perfect temperature

Unique Features

Applications

Wireless Thermostat

Owner’s Manual

Note:    The  degree  icon  of  the  T1800  or  T1900 

thermostat  will  blink  when  the  RF  Module  is  in 

control  of  the  thermostat  and  has  heard  from 

the wireless thermostat within the last ten minutes.

RF Receiver
ACC0437

C

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