KC12110 Single Stage Line Voltage Thermostat with Piggyback Plug – Adjustable from 30°F to 110°F

(5 customer reviews)


  • Construction: Plastic
  • Function: Heating & Cooling
  • Switch Type: Single Stage
  • Temperature Range: 30°F to 110°F with ±2° accuracy, 3° differential
  • Rating: Nema 4X, N.E.C. 457
  • Approvals: UL & cUL
  • Voltage: 120 VAC
  • Amperage: 12A
  • Features: Made in USA, 120-Volt, 8ft Piggyback Plug



K-Kontrol line voltage thermostats work for direct control of heaters, fans, air conditioners, ventilation equipment and more. Great for both heating and cooling applications.

A graduated temperature control unit that can be used anywhere! Clear cover protects from weather and damage. Weatherproof and corrosion proof with all polycarbonate thermoplastic construction and stainless steel capillary sensor. Not effected by surges, lightning strikes or power outages like a digital thermostat.

Line voltage thermostats use a liquid-filled sensing element and capillary. There is an exposed or concealed temperature set point dial, and it will switch line voltages.

Products are designed, manufactured, & shipped from our facilities in Eau Claire, WI to clients across the globe.

Original equipment manufacturers & agricultural communities worldwide use temperature controls designed & manufactured by K-Kontrols. Our temperature controls are great for barns, greenhouses, livestock buildings, & more.

Variety of custom options available such as temperature ranges, sensing element lengths, & private branding. Contact us for larger quantity (25+) orders or custom options.

Has standard 7/8 opening. We recommend using our strain relief cord connector that can be purchased here.

View Datasheet

Installation Instructions

Additional information

Weight 24 oz
Dimensions 9 × 7 × 6 in

5 reviews for KC12110 Single Stage Line Voltage Thermostat with Piggyback Plug – Adjustable from 30°F to 110°F

  1. Steven Boone

    Bought one of these a couple years ago. The 1400 watt room heater I use burns out the contact points in the heater every year because of off and on cycling. I thought maybe this device would cure that. The contact system in this device is better than in the cheap heater…but after 2 winters the points welded themselves together…just like the heater did. This device would work for 10 times that length if it had a mercury switch designed into it. Points are on their way out the day you first use this.

    I’m back to buy my second one.

  2. Steven Boone (verified owner)

    This is my second one. My first one arced the contact points together after one winter. Seems whatever these contact points are made of…they sure don’t like turning on and off a 1400 Watt room heater all night long. I’ve got about 20 hours on this one and the contact points seem to be sticking already. Not happy!

    The second one I purchased on Dec 5th for $19.95 plus shipping. Now…they’ve upped the price 50% to $29.90 plus shipping? Maybe they fixed the points welding themselves together. I hope so…I’m looking at buying another of these next winter.

  3. DENNIS HAYES (verified owner)

  4. Norbert Wenger (verified owner)

    I have three of these now. First two have worked great and I expect this one will as well.

  5. Norbert Wenger (verified owner)

    This is the fourth one I’ve purchased, so obviously I am pleased with the product.

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