Wireless: 900 Family: 800 Family: 700 Family: 400 Family:
TT-S-955WH
TT-S-955W
TT-N-631W
TT-WCTO
TT-S-955
TT-S-925
TT-S-915
TT-S-855C
TT-S-855
TT-N-851
TT-N-801

TT-S-755R
TT-S-755H

TT-S-755
TT-N-751H
TT-N-751

TT-P-705
TT-N-721
TT-N-701
TT-P-421
TT-N-421
TT-P-411
TT-N-411


Model TT-P-421
Multi-Stage
2 Heat, 1 Cool

Conventional or Heat Pump
5/2 p
rogrammable

This model features:

  • Dual Powered – Hardwired or Battery
  • 5-2 Day Separate Weekday / Weekend Programming
  • Large Display with Bright Blue Backlight
  • Adjustable Temperature Set Point Limits
  • Non-Volatile Memory Retains User Settings
  • Filter Check Monitor
  • Adaptive Recovery Mode (ARM™)
  • Adjustable 1st and 2nd Stage Temperature Differential
  • ESD Guard™ Electronic Circuitry
  • Compressor Short Cycle Protection
  • Separate Heating and Cooling Set Point Program
    Times and Temperatures
  • Temporary Program Override for 4 Hours
    or Until Next Set Point
  • Programmable Extended Hold Mode
  • Front Access Reset Button
  • F° / C° Switch
  • Auxiliary Heat Status Indicator
  • Mount to Horizontal Box
  • Easy Access Front Battery Door
  • Separate O & B Terminals
  • Meets California Title 24 Guidelines


 


Support files for the TT-P-421:
Operating / Installation Manual
Warranty Registration