Sensitive Bi-Metal Thermostat: Features a highly responsive bi-metal thermostat mechanism for precise temperature control Complete Kit Included: Comes with control knob, insulated wire leads, screw nut, and mini screwdriver for easy installation Egg Incubator Application: Designed specifically for use in egg incubators with reliable temperature regulation Optimal Temperature Range: Temperature range of 80-105F designed specifically for egg incubation requirements Easy Installation: Simple to install with long 1.5-inch shaft that can penetrate thick styrofoam walls Versatile Power Compatibility: 15A rating compatible with both AC and DC applications for flexible use Comprehensive Wiring Support: Includes wiring diagram for connecting both fan and heater components This is a Brand New bi-metal style thermostat that works GREAT in an incubator! Included with purchase: Thermostat with a temperature range of 80-105 F (Long 1.5" shaft can go through thick styrofoam walls). Control Knob with set screw and mini screwdriver. Lead wires with insulated connectors for thermostat. Screw nut that screws onto the thermostat shaft to help attach to a surface or panel. 15A rating. Can be used with either AC or DC applications. Comes with a wiring diagram for wiring in a fan and a heater Caution: this is an electrically powered device that you will be mounting in your incubator yourself. As with any thermostat like this, you should be sure to put a protecting screen of some kind around this to ensure the hot wires/metal is not touched. You must use a great deal of common sense when dealing with electrical devices. Electricity is wonderful but can be very dangerous. Use caution, common sense and if in doubt, ASK AN EXPERT!!!