Two(2) Carel thermostats with Four(4) sensors. Each thermostat can utilize two sensors - in cold plate setups one can be attached to plate to control on/off of unit and other in the box to monitor box temp. Thermostats are fully programmable to your specific settings. Thermostat with two sensors : $85.00 Both Thermostats with four sensors: $150.00 Shipping to be actual cost from a South Carolina. Sent from my iPad