Tekmar Thermostat PACE Supply | Programmable Thermostat Two Stage Heat Cool Thermostat With Slab Sensor An optional Adaptor Plate 012 is available to allow the thermostat to mount onto a single gang electrical box. Three different modes of operation: single stage heating, two stages of heating with a fan, or one stage of heating and one stage of cooling with a fan... Three different modes of operation: single stage heating, two stages of heating with a fan, or one stage of heating and one stage of cooling with a fan Tekmar tekmarNet - 553 - Thermostat - 7-Day Programmable - tN2/tN4 Features: 7 day programmable schedule, backlight, cooling, fan, 4 hour battery-free clock backup, and optimum start Slab Sensor 079 is included to measure floor temperature Tekmar 521_Q Programmable Quick Start Guide - .guide The Programmable Thermostat 521 is designed for three different modes of operation: single stage heating, two stages of heating with a fan, or one stage of heating and one stage of cooling with a fan. A permanent temperature hold button overrides the programmable schedule. A Slab Sensor 079 is included to measure floor temperature to protect the floor from overheating and enhance comfort.