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You searched for: Honeywell (Aube Tech) TH108 Series Line Voltage Thermostat. 240 or 347 Volts, 2-wire non-polarized connection
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Honeywell (Aube Tech) TH108 Series Line Voltage Thermostat. 240 or 347 Volts, 2-wire non-polarized connection


This high-capacity TRIAC thermostat combines unbeatable accuracy and silent operation.

The advantages of TRIAC switching:

  • 100% silent operation - ideal even for bedrooms

  • Unsurpassed temperature control eliminates temperature swings

  • No temperature swings means you are comfortable at a lower setpoint

  • Comfort at a lower setpoint saves money on heating bills

Models and Ratings

  • TH108PLUS

  • 3000 W @ 240 V 12.5 A resistive 60 Hz 2 wires / SPST
  • TH108-A-347S3

  • 4335 W @ 347 V 12.5 A resistive 60 Hz 2 wires / SPST


  • Temperature Control

  • Microprocessor-optimized PIA
    Heating cycles: 15 seconds
    Accuracy: ± 0.15ºC / 0.27ºF
  • Switching Action
    Triac - Silent operation
  • Temperature Setting: Manual, ºC / ºF selectable

  • Dimensions (H-W-D): 120 x 115 x 26 mm / 4.8 x 4.5 x 1 inches


  • Ultimate temperature control the most accurate type of thermostat on the market ±0.15ºC / 0.27ºF)

  • TH108PLUS ONLY: Backlit LCD

  • On-screen heating power indicator gives at-a-glance verification of power being used

  • 2-wire non-polarized connection means fast, hassle-free installation

  • Up/down buttons enable easy temperature setting

  • Also ideal for radiant ceilings

  • Battery free

TH108PLUS Installation Instructions
TH108-A-347S3 Installation Instructions
Item CodeDescriptionVendorQuantity
TH108-A-347S3 Tstat 277/347 Volt
Honeywell International (Aube Technologies) Thermostat - 15 second cycles - SP
TH108PLUS/U 240V 3000W White Thermostat
Honeywell (Aube Technologies) Non-Programmable Line Voltage Thermostat with TRIAC for Electric Heat (Convector, Baseboard, Radiant Ceiling) - SPST - 3000 Watts - 240 Volts - Backlight - 2 Wire Connection - Battery-free